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 Assignment Vector Representation A man wishes to travel due North in order to cross a river 5km wide flowing due East at 3kmhr^-1. If he can row at 10kmhr^-1 in still water. Find either scale drawing or by calculation. i). The direction in which he must head his boat in order to get to his destination directly opposite his starting point. ii). The Resultant Velocity of rhe boat in the river. iii). The time taken to cross the river. Iv). How far from his destination he would land if he ignorantly steers northward. asked 2 weeks ago Answer Hi wisdom, Check out this link - https://ni.ckzom/262 It probably has the solution you are looking for. answered 2 weeks ago

 Assignment Maths what is the missing number asked 4 weeks ago

 Assignment Physics Kindly show how the calculator can be used to solve this problem Question 80 asked a month ago

 Assignment The Value Of Money A company negotiates a loan of #200,000 over 15 years at an interest rate of 12% per anum. What is the annual constant repayment neccessary to pay off the debt? asked a month ago Answer Nickzom Calculator is highly capable of solving this problem. Visit. - https://ni.ckzom/588 Here is a solution from Nickzom Calculator all you have to do is to enter the values. The formula for this operation is A = P[i((1 + i)N)] / [((1 + i)N) - 1] Where: A = Annual Worth or Amount P = Present Worth or Amount i = Interest Rate N = Number of Years You entered 200000 as the present worth or amount. You entered 0.12 as the interest rate. You entered 15 as the number of years. Steps: A = 200000[0.12((1 + 0.12)15)] / [((1 + 0.12)15) - 1] A = 200000[0.12((1.12)15)] / [((1.12)15) - 1] A = 200000[0.12 x 5.473565759257043] / [5.473565759257043 - 1] A = 200000[0.6568278911108452] / [4.473565759257043] A = 200000 x 0.1468242396463463 A = 29364.84792926926 Therefore, the capital recovery is 29364.84792926926. answered a month ago

 Assignment Mathematics Of Finance the profit in thousands of naira from a daily production corporate is given by which is a function of the level of production (x) in thousands. If dp/dx = 11 - 2x and the profit breakeven point is known to be a production of #3000. Find. (a) P as a function of x (b) daily production operations that give maximum profit. (c) the value of maximum daily profit asked a month ago

 Assignment Polynomial Find the polynomial of degree 3 if P(1) = P(-2)=0, P (-1)=4 and P (2)=28 asked a month ago Answer Hi Check out this link - https://ni.ckzom/135 It may help you in providing the solution to this question. answered a month ago

 Assignment Probability From the integers 10 to 25, both numbers inclusive, a boy picked a number. What is the probability that it is either a prime or even number? asked a month ago Answer There are 16 numbers from the integers 10 to 25. There are 5 prime numbers from the integers 10 to 25 both inclusive. There are 8 even numbers from 10 to 25 both inclusive. Therefore, the probability that it is either a prime or even number is 5/16 + 8/16 13/16 answered a month ago

 Assignment Polynomial The remainder of polynomial of P(x) is 3 when divided by (x-2) and 2 when divided by (x-3). If the remainder of P(x) is (px +q) when divided by (x2 -5x +6) find the value of p and q. asked a month ago

 Assignment Direct Current A battery has an emf of 15.0V.the terminal voltage of the battery is 11.6v when it is delivering 20.0 W of power to an external load resistor R.(a)what is the value of R(b)what is the internal resistance of the battery. (a.)what is the current in a 5.60 ohms resistor connected to a battery that has a 0.200-ohms internal resistance if the terminal voltage of the battery is 10.0V? (b.)what is the emf of the battery? asked a month ago Answer First we find the current, P = IV Where V = EMF I = 20 / 15 I = 1.333A R = V / I Where V = terminal voltage R = 11.6 / 1.333 R = 8.702 Ohms As for the internal resistance, E = I (R + r) 15 = 1.333 (8.702 + r) 11.25 = 8.702 + r r = 11.25 - 8.702 r = 2.548 Ohms As for the second question, In finding the current we have I = V / R Where V = terminal voltage = 10 V R = Load resistance = 5.60 ohms I = 10 / 5.60 I = 1.786 A In finding the EMF of the battery we have, E = I (R + r) Where r = internal resistance = 0.2 ohms E = 1.786 (5.60 + 0.200) E = 1.786 (5.8) E = 10.36 V answered a month ago

 Assignment Logarithm Show that a^logax is equal to x (Proof) asked a month ago Answer In other to prove this equation for you Let's say that a = 10 and x = 100 10^log 100 of base 10 =10^2 =100 Assuming a = 10 and x is also equal to 10 We have that 10 ^ log 10 of base 10 = 10 ^ 1 = 10 QED Therefore the logarimthic equation is correct. You can try it with random numbers and it will still prove itself. answered a month ago

 Assignment Biostat four trucks loads of imported rice analysed for pb2+ the results obtained indicated the following concentrations A=3.998(+- 0.015),B=2.556(+- 0.015),C=2.880(+-0.01),D=3.443(+-0.015) calculate the mean constant of the results and determine d absolute and relative uncertainty. asked a month ago Answer Hi Kalu, I really do not know much about uncertainties but I did some browsing and came up with these two materials for you to go through. https://ni.ckzom/494 and https://ni.ckzom/494 answered a month ago Answer Thanks that was helpful answered a month ago See More Answers

 Assignment Geometry Kindly help with 7b asked a month ago Answer Now, if the 2 vectors are parallel you will get UxV =0 that will be a zero vector = (0,0,0) lets take two vectors (1,1,1) and (2,2,2) now if you calculate its cross product it comes out to be 0i +0j+0k so they are parallel. Where VW = 8.5i + 0.5j + 0k UT = 17i + j + 0k In reference to your question I, j and k represents a, b and c Since there is no coefficient of c in the question, 0 is assigned to it. Nickzom Calculator can perform vector operations and show the steps too. Here is the link - https://ni.ckzom/553 The formula for carrying out this operation is: a x b = (a2b3 - a3b2)i - (a1b3 - a3b1)j + (a1b2 - a2b1)k Note: i x i = j x j = k x k = 0 i x j = -(j x i) = k j x k = -(k x j) = i k x i = -(i x k) = j a x b = ((8.5)i + (0.5)j + (0)k) x ((17)i + (1)j + (0)k) a x b = ((0.5)(0) - (0)(1))i - ((8.5)(0) - (0)(17))j + ((8.5)(1) - (0.5)(17))k a x b = ((0) - (0))i - ((0) - (0))j + ((8.5) - (8.5))k a x b = (0)i - (0)j + (0)k Therefore, the vectors VW and UT are parallel. answered a month ago Answer Thanks.. So how much to get the calculator? answered a month ago Answer To get the calculator click on this link - https://ni.ckzom/587 Or visit https://ni.ckzom/587 answered a month ago

 Assignment Maths State five element of data, that can be categories as quantitative and qualitative data types each, while stating the method (x) adapted in acquiring a data stated and also states the soiurces of these data. asked 2 months ago Answer Hi check out this material - https://ni.ckzom/339 answered a month ago

 Assignment Brain Work Mathematics Pls help out asked 2 months ago Answer Is there any hint to help in solving this logic? answered a month ago

 Assignment Sounds A stone is dropped into a well and a splash is heard after 2.6s.calculate the depth of the well. Velocity of the sound=334m/s asked 2 months ago Answer Depth of the well = vt Where v = velocity of the sound = 334 m/s t = time = 2.6 s Therefore, Depth of the well = 334(2.6) m = 868.4 m Therefore, the depth of the well is 868.4 m answered 2 months ago Answer But i had a different ans and also the ans on the text is stil different answered 2 months ago

 Assignment Maths Given a right pyramid of hieght 14cm and slant sides 16cm and base dimension of 6cm and 8cm calculate. i) The surface Area of the pyramid ii) The total surface area iii) If the water inside is pour into a cubic tank of side 6cm. What is the level of the water in tank. asked 2 months ago Answer Lateral surface area of the pyramid = 0.5pl Where p = perimeter of the base l = slant height p = 2(l + w) p = 2(6 + 8) p = 2(14) p = 28 cm l = 16 cm Lateral Surface Area of the pyramid = 0.5(28)(16) = 224 cm squared To find the total surface area of the pyramid Total Surface Area of the pyramid = Lateral Surface Area + Area of the Base Area of the Base = (6)(8) = 48 cm squared Total Surface Area of the Pyramid = (224 + 48) cm squared = 272 cm squared. For the last question, we would first of all find the volume of the pyramid and equate it to the volume of the cubic tank of side 6 cm. V = lwh / 3 Where l = base length = 6 cm w = base width = 8 cm h = height = 14 cm V = (6)(8)(14) / 3 V = 672 / 3 V = 224 cubic centimeters Now to find the level of the water in the tank lwh = 224 Where l = 6 cm w = 6 cm Therefore, (6)(6)h = 224 Making h the subject of the formula h = 224 / (6)(6) h = 224 / 36 h = 6.22222 cm So, the level of water in the tank is 6.22222 cm. See Also https://ni.ckzom/621 answered 2 months ago

 Assignment Physics A car starting from rest, accelerating uniformly and attained a speed of 80m/s. In 30second. It maintain this steady speed to another 30second, it then slows down uniformly until it comes to rest in the next 40seconds. i) sketch the velocity time graph for the motion of the car. Obtained from the graph, the uniform acceleration during the first stage of the journey and the retardation during the last stage of the journey for how long did the car traveled alltogether. asked 2 months ago Answer The graph is below. To find the uniform acceleration during the first stage of the journey. We would use: v = u + at Where v = 80 m/s u = 0 since it started from rest t = 30s Therefore 80 = 0 + a(30) a = 80 / 30 a = 2.6667 m/s^2 As for the retardation, u = 80 m/s v = 0 (since the final velocity is at rest) t = 40 s 0 = 80 + a(40) Making a the subject of the formula a = -80 / 40 a = -2 m/s^2 Therefore, the retardation is 2 m/s^2. From the graph, you can see that the car travelled for 100 seconds. See Also: https://ni.ckzom/622 answered 2 months ago

 Assignment Mathematics Maclaurin series asked 2 months ago Answer Dear Richard, I am not grounded on Maclaurin series yet so I did some research on the web and found a video in Khan academy that solves your exact question. Here is the link - https://ni.ckzom/174 answered 2 months ago

 Assignment Interest And Rates Kelvin agrees to pay \$15000 per month for 18 months to pay a house loan, if interest of 10% is charged monthly, how much did the house originally cost? asked 3 months ago Answer Since we have 10% compounded monthly and there are 12 months in a year The interest rate per month is 10%/12 = 0.833% per month Total amount paid by kelvin is \$15,000 x 18 = \$270,000 Formula for compound interest for the question A = P(1 + (R/100))^N A = total amount paid by kelvin = \$270,000 R = Interest Rate per month N = Number of Months P = the cost of the house originally \$270,000 = P (1 + 0.00833)^18 \$270,000 = P (1.00833)^18 \$270,000 = P (1.1611) P = \$270,000 / 1.1611 P = \$232,538.1104 Therefore, the house originally costs \$232,538.1104 answered 2 months ago

 Assignment Mathematics The perimeter of a semicircle is 56cm. if the length of the arc is 38cm, what is the length of the base line AB. asked 3 months ago Answer Since, you did not upload any photo describing what AB stands for. Does AB stand for the diameter of the semicircle? answered 3 months ago

 Assignment Collision A body of mass 100g moving with a velocity of 10.0ms^-1 collides with a wall. If after the collision, it moves with a velocity 2.0ms^-1 in the opposite direction , calculate the change in momentum asked 3 months ago Answer Change in Momentum = m1(v1 - v2) m1 = 100g v1 = 10m/s v2 = 2m/s Change in Momentum = 100(10 - 2) Change in Momentum = 100(8) Change in Momentum = 800 gm/s Therefore, the change in momentum is 800gm/s. answered 3 months ago

 Assignment Momentum When taking a penalty kick , a footballer applies a force of 30.0N fore a period of 0.05s If the mass of the ball is 0.075kg, Calculate the speed with wich the ball moves off . asked 3 months ago Answer Force = mass x acceleration Force = mass x (velocity) / time In this context, velocity and speed mean the same thing. Since we have: Force = 30N Time = 0.05s Mass = 0.075Kg Making velocity the subject of the formula we then have: velocity = Force x time / mass velocity = 30 x 0.05 / 0.075 velocity = 1.5 / 0.075 velocity = 20 m/s Therefore, the speed at which the ball moves off is 20 m/s. answered 3 months ago

 Assignment Indices 5^x1/2 -5^(x-7)1/2=100 asked 3 months ago Answer Hi John, I saw your mathematical equation but it is not quite clear. Can you please write it down in a piece of paper, snap it and upload? answered 3 months ago

 Assignment Thermochemistry 0.4g of ethanol when burnt raised the temperature of 50g of water by 14.3kelvin.calculate the heat of combustion of ethanol asked 3 months ago Answer I could not pin point an exact solution to your question but I have a material for you to check out. Link - https://ni.ckzom/828 answered 3 months ago

 Assignment Solubulity 1.0dm^3 of distilled water was used to wash 2.0g of a precipitate of silver.if the solubulity product of silver chloride is 2.0*10^-10.what quantity of silver was lost in the process asked 3 months ago Answer Hi Hafsah, MySchool provided the answer to this question. The link is https://ni.ckzom/196 answered 3 months ago

 Assignment Quanta Physics what are the differences between photons and phonons asked 3 months ago Answer Dear Hafsah, Check out these answers from Quora for your question. The link is https://ni.ckzom/131 answered 3 months ago

 Assignment Physics ( Radioactivity Half Life) A substance has a half life of 3 mins after 6 mins the count rate was observed to be 400 what its count rate at zero time asked 3 months ago Answer Dear Joshua, check out this link - https://ni.ckzom/465 It has the solution to your question. answered 3 months ago

 Assignment Physics A cell of internal resistance 2 ohms supplies current to a 6 ohm resistor . The efficiency of the cell is asked 3 months ago Answer Efficiency of a cell = (V / EMF) x 100% Where, V = Voltage = IR EMF = Electromotive Force = I(R + r) Therefore, Efficiency of the cell = (IR / I(R + r)) x 100% Efficiency of the cell = (R / (R + r)) x 100% R = Resistance = 6 ohms r = Internal Resistance = 2 ohms Efficiency of the cell = (6 / (6 + 2)) x 100% Efficiency of the cell = (6 / 8) x 100% Efficiency of the cell = 0.75 x 100% Efficiency of the cell = 75% answered 3 months ago

 Assignment < Of Elevation And Depression a cliff on the side of a river is 300m high. if from the other side of the river the angle of depression on the river is 60 degrees. find the width of the river asked 3 months ago Answer From the figure below, We would make use of trigonometric functions. In order to obtain the width of the river which is adjacent to the right angle we would have to use tangent. Therefore, tan 60 = opposite / adjacent adjacent = w = width of the river opposite = 300 m = height of the cliff tan 60 = 300 / w Making w the subject of the formula w = 300 / tan 60 w = 300 / 1.7321 w = 173.2 m Therefore, the width of the river is 173.2 m. answered 3 months ago

 Assignment Physic An electric kettle with negligible heat capacity is rated at 2000W. If 2.0kg of water is put in it, how long will it take the temperature of water to rise from 20 degree Celcius to 100 degree celcius (specific heat capacity of water =4200Jkg^-1K) asked 3 months ago Answer First we convert the temperature units from celsius to kelvin T1 = 20 degree celsius = 293.15 K T2 = 100 degree celsius = 373.15 K The formula for solving this problem is thus: Q/t = mc (T2 - T1) / t Where Q/t is the rate = 2000W m = mass = 2 Kg c = specific heat capacity of water = 4200JKg^-1K^-1 T2 - T1 = temperature change = 373.15 K - 293.15 K = 80 K t = time in seconds 2000 = 2(4200) (80) / t 2000 = 8400 (80) / t Dividing both sides by 8400 2000 / 8400 = 80 / t 0.238095 = 80 / t Making t the subject of the formula t = 80 / 0.238095 t = 336 seconds Therefore, it takes 336 seconds for the temperature to rise. answered 3 months ago

 Assignment Physics Question {1}. A metre rule has its Centre of gravity at 50cm mark, the metre rule balance on a fulcrum place at the 35cm mark. What is the mass of the metre rule Question (2). What Is the reaction due to the floor of a lift on a man of mass 75kg, when the lift rises with an acceleration of 2m|s² {take g=10m|s} asked 3 months ago Answer In question 1 - Is your question complete? Was there another mass given at the 35cm mark? In question 2 Nickzom Calculator can solve it for you anytime, anywhere Link - https://ni.ckzom/155 The formula for this operation is: R = m(a + g) Where R = Reaction m = Mass g = acceleration due to gravity a = Acceleration You entered 75 as the mass. You entered 2 as the acceleration. You entered 10 as the acceleration due to gravity. Steps: R = 75(2 + 10) R = 75(12) R = 900 Your answer is 900. Dear User, remember to add the specified unit. For Example: Your answer is 900 N. - See more at: https://ni.ckzom/155 answered 3 months ago

 Assignment Refrative Index A glass plate 0.9cm thick has a refrative index of 1.50. How long does it takes for a pulse of light to pass through the plate asked 3 months ago Answer Where refractive index is n n = c/v where c is the speed of light v is the speed of light passing through the glass plate. c = 3 x 10^8 Therefore, 1.5 = (3 x 10^8) / v Making v the subject of the formula v = (3 x 10^8) / 1.5 v = 2 x 10^8 m/s Thickness = 0.9 cm = 0.009 m This length unit conversion above was done by Nickzom Calculator. The link is https://ni.ckzom/190 velocity = thickness/time Therefore, (2 x 10^8) = 0.009 / t Making t (time) the subject of the formula t = 0.009 / (2 x 10^8) t = 0.000000000045 seconds t = 4.5 x 10^-11 seconds Therefore, It takes 4.5 x 10^-11 seconds for a pulse of light to pass through the plate. answered 3 months ago

 Assignment Physics a mango fruit drops to the ground from the top of its tree which is 5m high how does it take to reach the ground asked 3 months ago Answer Since the mango fruit dropped from the top of the tree. It was at rest. Therefore, the initial velocity, u = 0 m/s^2 Acceleration due to gravity = 10 m/s^2 Distance to the ground is 5 m Motion Formula: S = ut + (1/2)gt^2 where, S is the distance u is the initial velocity g is the acceleration due to gravity 5 = (0)t + (1/2) (10) t^2 5 = 0 + 5t^2 5 = 5t^2 Divide both sides by 5 1 = t^2 Take the square root of both sides t = 1 s Therefore, it takes 1 second for the mango fruit to reach the ground. Nickzom Calculator calculates a lot of problems on motion and also show the steps. The link is https://ni.ckzom/480 answered 3 months ago

 Assignment Geometry an equilateral triangle of side 10cm is inscribed in a circle find the radius of the circle asked 3 months ago Answer From the diagram below, O is the center of the circle. OC is the radius of the circle. Since the triangle is an equilateral triangle. Since OC is r (radius of the circle) Making use of trigonometry SOH CAH TOA cos We already have DC to be equal to 5 cm. Therefore, cos 30 degrees = 5 / r Making r the subject of the formula. r = 5 / cos 30 degrees r = 5 / 0.8660 r = 5.7736720554 cm Therefore, the radius of the circle is 5.7736720554 cm. Nickzom Calculator is able to perform some mensuration / geometric operations and show the steps too. Link - https://ni.ckzom/238 answered 3 months ago

 Assignment Physics Two similar but opposite charge bodies -q & +q each of magnitude 5*10^8c are seperated by a distance of 8cm in vacuum.calculate the magnitude & direction of the resultant electric field intensity E at the point P due to system of charges asked 4 months ago Answer First we convert the 8 cm to meters Therefore, the distance apart is 0.08 m The formula for this operation is: E = kQ/r² Where E = Electric Field Intensity k = Constant of proportionality (1/4πe₀) = 9.0 x 10⁹ (9E9) Q = Quantity of charge r = radius You entered 500000000 as the charge, Q. You entered 0.08 as the radius. Steps: E = 9.0 x 10⁹ x (500000000) / 0.08² E = 4500000000000000000 / 0.0064 E = 703125000000000000000 Your answer is 703125000000000000000 Dear User, remember to add the specified unit. For Example: Your answer is 703125000000000000000 N/C. - See more at: https://ni.ckzom/402 This was solved automatically by Nickzom Calculator. answered 3 months ago

 Assignment Geometry how do I calculate the base angle of an isosceles triangle asked 4 months ago Answer Check out this material in Math Stack Exchange. Link - https://ni.ckzom/528 answered 4 months ago

 Assignment Stoichiometry in the rxn : sno2+2c=sn+2co, the mass of coke containing 80% carbon required to reduce 0.302kg of pure tin oxide is? asked 4 months ago Answer In the reaction: SnO2 + 2CO From the equation above 2(12 g) carbon = 151 g SnO2 24 g carbon =151 g SnO2 = 0.302 kg SnO2 = 24/151g χ 0.0302 kg carbon = 0.048 kg carbon Mass of coke is required not mass of carbon,so it is (0.048×100)÷80 = 0.06 Link - https://ni.ckzom/501 answered 4 months ago

 Assignment Volumetric Analysis How much of Magnesium is required to react with 250cm^3 of 0.5M HCL asked 4 months ago Answer Using the formula Molarity = No of moles/ volume in dm3 And volume of HCl = 250cm3 ==> 0.25dm3 Molarity of HCl = 0.5M Therefore no of moles of HCl = molarity x volume in dm3 = 0.5M x 0.25dm3 = 0.125mol of HCl But from the equation of the reaction, 2mols of HCl reacted with 1mol of Mg Therefore 0.125mols of HCl will react with; (0.125mol x 1mol)/2mol = 0.0625mol of Mg Using the formula; No of moles = mass/ molar mass We have that; Mass = no of mole x molar mass Mass of Mg = No of moles of Mg x Molar mass of Mg = 0.0625mol x 24 = 1.5g answered 4 months ago Answer The above solution is correct. Thank you Richard! answered 4 months ago

 Assignment Reflection Of Sound Waves A man standing between 2 parallel cliffs fires a riffle.He hears 1 echo after 1.5sec,another 1 after 2.5sec and another 1 after 4sec.Explain how these echoes reach him and calculate the apart of the two cliffs.The velocity of sound under the given conditions is 340m/s asked 4 months ago Answer Click on this link - https://ni.ckzom/224 It has the solution to your question. answered 4 months ago

 Assignment Heat Energy The temperature of a body falls from 303.15k to 293.15k in 300s the air temperature is 283.15k.find the temperature after a further 300s. asked 4 months ago Answer Check out this journal to see if it can be of help to you. Link - https://ni.ckzom/580 answered 4 months ago

 Assignment Heat Energy A constant mass of gas maintained at constant pressure has a volume of 200.0cmcube at a temperature of melting ice,273.2cmcube at a temperature of water boiling under standard pressure and 525.1cmcube at the normal boiling point of sulphur.a platinum wire has resistance of 2.00ohms,2.778ohms and 5.280ohms at a temperatures.calculate the values of the boiling point of sulphur given by the two sets of observations. asked 4 months ago Answer Visit - https://ni.ckzom/90 answered 4 months ago

 Assignment Heat Energy State how linear expansivity is related to the cubic expansivity asked 4 months ago Answer Check these materials https://ni.ckzom/993 https://ni.ckzom/993 answered 4 months ago

 Assignment Heat Energy what is meant by the linear expansivity of a solid. asked 4 months ago Answer Hi Chibuzor, Check out this link - https://ni.ckzom/866 answered 4 months ago

 Assignment Statistics A boy has 7 blue,5 white balls in his left pocket,6 blue and 8 white balls in his right pocket ,if he transfers 1 ball unseen from his left pocket to his right pocket,what is the probability of then drawings a blue ball from his right pocket asked 4 months ago Answer Hi Chibuzor, I tried to come up with a perfect solution to your problem but the best I could find is within this link - https://ni.ckzom/634 answered 4 months ago

 Assignment Statistic a)Write short note on the source of statistical data b)of what importance is statistics to ur field asked 4 months ago Answer Primary, or "statistical" sources are data that are collected primarily for creating official statistics, and include statistical surveys and censuses. Secondary, or "non-statistical" sources, are data that have been primarily collected for some other purpose (administrative data, private sector data etc. You can read up more on the sources of statistical data. Link - https://ni.ckzom/93 Obviously, I do not know your field regarding the importance of statistics but I am able to provide you with a material/link that has the importance of statistics to various fields. Link - https://ni.ckzom/93 answered 4 months ago

 Assignment Physics A commercial heat pump has CP=3 when the indoor temperature is 20°C and the outdoor temperature is 6°C. How much work is required to operate it if 3*10^6J of heat must be transferred to the room each hour? asked 4 months ago Answer Hi Nafiu, Check out this Application of Thermodynamics material to see if it can help you solve the problem. Link - https://ni.ckzom/763 answered 4 months ago

 Assignment Physics A nuclear plant on a submarine produces steam at 350C to drive a steam electric turbine. the temperature on the low side of the turbine is 27C. how much energy is dissipated as waste heat asked 4 months ago Answer Hi Nafiu, I could not find any material to aid you in answering the above question. Here is a link to the Google Search to see if anything there could be of any help to you. Link - https://ni.ckzom/649 answered 4 months ago

 Assignment Physics An ideal gas at 17•c has a pressure of 760 mmHg and is compressed adiabatically until its volume is halved.Calculate final temperature of the gas assuming Cp= 2100 J/kg/K and Cv=1500J/kg/K asked 4 months ago Answer Answered By: Ogunlalu answered 4 months ago

 Assignment Binomial Expansion If x = 1 and y = 0.3 find (x-y)^6 asked 4 months ago Answer Nickzom Calculator is able to solve this problem for you Link - https://ni.ckzom/325 answered 4 months ago

 Assignment Mathematics From a tank filled with 240 gallons of alcohol, 60 gallon are drawn off and d tank is filled up with water.Then 60 gallons of d mixture are removed and replaced with water etc.how many gallon of alcohol remain in d tank after 5 drawing of 60 gallons each are made ? asked 4 months ago Answer Hi Awe Check if the problem and solution provided in this pdf could be of any help to you. Link - https://ni.ckzom/189 answered 4 months ago

 Assignment Physics The speed U of an object is given by the equation. V=At^3-Bt,where t refers to time. What are the dimension of A and B? asked 4 months ago Answer This link in Yahoo answers has the solution. Link - https://ni.ckzom/662 answered 4 months ago

 Assignment Reflected Rays proof mathematically that angle at incidence rays is equall to the angle at reflected ray. asked 4 months ago Answer Hi Aliyu, Check out this link - https://ni.ckzom/143 It has the mathematical proof answered 4 months ago

 Assignment Physics A thread of mercury of length 20cm is used to read some air in a capillary tube with uniform cross section area and closed at one end with the tubes vertical and the open end uppermost, the length trapped air column is 15cm. calculate the length of air column when the tube is held. (I) horizontal.. (11) vertical with the opened underneath. asked 4 months ago Answer Wadup Wisdom, Check out this link - https://ni.ckzom/417 It provides an answer to your question. answered 4 months ago

 Assignment Physics Explain with the aid of diagram, how a concave mirror could be used to I. ignite a piece of carbon paper II. produce an exact of a picture on a screen. asked 4 months ago Answer Hi Wisdom, Check out this write up - https://ni.ckzom/24 answered 4 months ago

 Assignment Reflected Rays proof that angle at incidence is equall to the angle at reflected rays asked 4 months ago Answer Basically as the wave front Wr approaches the mirror S, each point on the mirror re-emits (scatters) the light energy in all directions. Since the light energy is re-emitted at the same speed as it approaches, the light emitted from p gets to point p' just as light reaches point p'1 (the distance from p to p' is the same as the distance from p1 to p'1). Some simple geometry will prove that the angles alpha and alpha' are equivalent. answered 4 months ago

 Assignment Chemistry Work On Organic Chem what are alkynes asked 4 months ago Answer There are so many different classifications of organic chemical compounds. One of these are organic compounds called alkynes. What are alkynes and how do we know that a chemical compound is an alkyne? Alkynes are hydrocarbons, which are organic chemical compounds containing carbon (C) and hydrogen (H) atoms, and the feature that makes them recognized as alkynes is the presence of triple bonds. Chemical compounds that have triple and double bonds in their chemical structures are referred to as unsaturated. Because alkynes have triple bonds in their chemical structure and consist of carbon and hydrogen atoms, they are unsaturated hydrocarbons. Below, we can see the general chemical structure of alkynes (RCCR'). The carbon (C) atoms shown below are bonded together by a triple bond. We can also see two side groups, R and R', which are bonded to the carbon (C) atoms. The side groups R and R' could be any group that consist of hydrogen and/or carbon atoms. You can read so much more about alkynes from this website - https://ni.ckzom/348 You can find the properties, uses and examples of alkynes from that website too. answered 4 months ago Answer any of the series of unsaturated hydrocarbons containing a triple bond, including acetylene. answered 4 months ago

 Assignment Biology Association Differentiate btw commensalism and symbiosis asked 4 months ago Answer Symbiosis is the ecological relationship between two or more organisms living closely together with some form of feeding relationship involved. Commensalism is a form of symbiotic relationship. It is also an association of two or more partners living together, where only one benefits from the partnership and the other remains unharmed. An example of this is the relationship between a sea anemone with and a clown fish. The anemone travels with the fish on route to its destination and the fish remains unharmed. Check out this website - https://ni.ckzom/441 answered 4 months ago

 Assignment Mathematics The coefficients of the (r-1)th, rth and (r+1)th terms in the expansion of (x+1)n are in the ratio 1:3:5. Find both n and r. asked 4 months ago Answer Given coefficients of( r-1)th, rth and (r+1)th terms in the expansion of (x+1)n are in the ratio 1:3:5 Coefficient of (r-1)th term = C(n, r-2) Coefficient of rth term = C(n, r-1) Coefficient of (r+1)th term = C(n, r) C(n, r-2) : C(n, r-1) : C(n, r) = 1:3:5 Divide 1st and 2nd C(n,r-2)/C(n,r-1) = 1 / 3 = [n! / (r-2)! (n -r +2)! ] x [(r-1)!(n-r+1)!/ n!] = 1/3 ( r -1)(r -2)! / ( r – 2)! ( n -r +2) = 1 / 3 ( r -1) / ( n -r +2) = 1 / 3 3r - 3 = n - r + 2 n - 4r = -5 ----------(1) Divide 2nd and 3rd C(n,r-1)/C(n,r) = 3/5 [n! / (r-1)! (n -r +1)! ] x r!(n-r)!/ n! = 3 / 5 r / (n -r + 1) = 3 / 5 5r = 3n - 3r +3 3n - 8r = -3 ---------(2) 2(n - 4r = -5) 2n - 8r = -10 ---------(3) Subtract (3) from (2) n = 7 Substitute n = 7 in (2) We get r = 3 n = 7, r = 3 This answer was culled from this website - https://ni.ckzom/226 answered 4 months ago

 Assignment Mathematics If log 10 to base 8 = X, evaluate log 5 to base 8 in terms of X asked 4 months ago Answer if log 10 base 8 = x. solving log 5 to base 8 will result into these: by improvising log 5 will be log (10/2) to base 8. then log (10/2) = log 10 base 8 - log 2 base 8. by log 10 base 8 with x in the workings will have [ x - log 2]. let log 2 base 8 = m taking away log it will 8^m = 2 (note ^ means power or index). 8 can be express as 2^3^m = 2^1 also 2^3m = 2^1. by eliminating 2 we'll have 3m = 1, dividing both side by 3 we'll give m = 1/3. taking the value of m into [x - log 2] will give [x - 1/3] answered 4 months ago

 Assignment Chemistry A spring tablet contained accityle salicylic acid HCaH2O each tablet contains approximately 0.32cm of the acid, if 25cm of calcium hydroxide is required for the neautralization of the acid content in the tablet. What is the malarity of the base? Quatin two(2). What is the straingth of a solution to be obtained when 1.00g of sodiun chloride is added to 100cm of 0.2moldm of sodiun chloride solution? asked 4 months ago Answer Hi I can't find a concrete material to help you with your questions but check if this link - https://ni.ckzom/842 could be of assistance. answered 4 months ago

 Assignment Wave Two waves are propagating on the same very long string.A generator at the left end of the string creates a wave given by y=6.0cm cosπ÷2[2.0m} x+[8.0s] and one at the right end of the string creates the wave y=(6.0cm)cos π÷2[(2.0m) × -(8.0s)t] A.... Calculate the frequency,wavelength and speed of each wave B..... Find the point at which there is no motion (the nodes)(x=50cm,150cm,250cm) C..... At which point is the motion at maximum asked 4 months ago Answer Hi Silva, The link to this PDF file has the solution to you question. Link - https://ni.ckzom/211 answered 4 months ago

 Assignment Calculation Of Masses From Chemical Equations What mass of dilute trioxonitrate(V) acid (containing 10% w/w of pure acid) will be required to dissolve 2.5g chalk, CaCo3. Pls also tell me what w/w in the question means... Thanks! asked 4 months ago Answer Hi Precious, Check if this link - https://ni.ckzom/305 could help you in any way. As for what w/w means check this Wikipedia link - https://ni.ckzom/305 out. answered 4 months ago

 Assignment Wave A sinusoidal wave travels along a string. If the time for a particular point to move from maximum displacement t zero displacement is 0.17s,what are (a) the period and (b) the frequency (c) if the wavelength is 1.4m,what is the speed of the wave? asked 4 months ago Answer In this case, The period is 4 x 0.17s = 0.68s The frequency is 1/period = 1/0.17s = 1.47Hz The speed is wavelength x frequency = 1.4 x 1.47 = 2.058 m/s I hope this helps. answered 4 months ago

 Assignment Accelation Due Gravity A stone throw vertically upward With a speed of 20m/s.one second later, a second stone is thrown vertically upwards with a speed of 30m/s.At what height above the ground do they collide? asked 4 months ago Answer Hi John, I have got a link for that would help you solve this problem. The link is https://ni.ckzom/230 answered 4 months ago

 Assignment Heat Energy Aconstant volume gas thermometer is calibrated in dry ice(that is carbondioxide in the solid state which has a temperature of -80.0c and in boiling ethyl alcohol (78.0c).the two pressure are 0.9000atm and 1.635atm.what celsius value of absolute zero does the caliaration yield asked 4 months ago Answer Hi Chibuzor, Check out this link - https://ni.ckzom/180 It has the answer to your question. answered 4 months ago Answer Ans 58.50c answered 4 months ago

 Assignment Heat Energy a)what is the physical significance of the factor 9/5 in the equation Tf=9/5 Ttita+32? why is this factor missing in the equation Tk=Ttita+273.15?. asked 4 months ago Answer Hi Chibuzor, Check out the this link - https://ni.ckzom/422 answered 4 months ago

 Assignment Chemistry Practical. A is a dilute tetraoxosulphate(iv) acid, B contain 1.5g of sodium hydrogen for 25ocm-3 of solution, 25cm3 of B requires 15.5cm3 of A for complete neutralisation. Calculate. (a) concentration of B in g/dm-3. (b) concentration of A in mol- dm-3. asked 4 months ago Answer Hi Christopher, Check out this link - https://ni.ckzom/617 I think it would help you answer your question. answered 4 months ago

 Assignment Further Maths, Partial Fraction Resolve into partial fractions, using comparison of coefficients: 2x+4/ (x-1)(x+3) asked 4 months ago Answer Nickzom Calculator can solve this partial fraction question and show you the steps too. Here is the link to the web app - https://ni.ckzom/805 Here is the solution: (ax + c)/((mx + k)(nx + l)) = A/(mx + k) + B/(nx + l) (2x + 4)/((1x + -1)(1x + 3)) = A/(1x + -1) + B/(1x + 3) Multiplying throughout by (1x + -1)(1x + 3) 2x + 4 = A(1x + 3) + B(1x + -1) ... {I} To find B: (1x + 3) = 0; 1x = -3 x = -3 / 1 x = -3 Substituting -3 for x in Equation I 2(-3) + 4 = A(1(-3) + 3) + B(1(-3) + -1) -6 + 4 = A(0) + B(-3 + -1) -2 = B(-4) B = -2 / -4 B = -1/-2 To find A: (1x + 3) = 0; 1x = 1 x = 1 / 1 x = 1 Substituting 1 for x in Equation I 2(1) + 4 = A(1(1) + 3) + B(1(1) + -1) 2 + 4 = A(1 + 3) + B(0) 6 = A(4) A = 6 / 4 A = 3/2 Therefore, the solution to your partial fraction is: (2x + 4⁄)/((1x + -1)(1x + 3)) = (3/2)(1x + -1) + (1/2)(1x + 3) - See more at: https://ni.ckzom/805 answered 4 months ago

 Assignment Physics A sinusoidal wave travels along a string. If the time for a particular point to move from maximum displacement to zero displacement is 0.17s, what are (a) the period (b) frequency (c) if the wavelength is 1.4m, what is the speed of the wave? asked 4 months ago Answer I found the solution to your question at chegg. Sign Up and view it. This is the link https://ni.ckzom/338 answered 4 months ago

 Assignment Thermal Properties Consider an ideal gas at 300k and 1.00 atm pressure.to get some idea how close these molecules are to eack other,on the average,imagine them to be uniformly spaced,with each molecule at the centre of a smal cube (a.)what is the length of an edge of each cube if adjacent cubes touch but do not overlap?(b)how does this distances compare with the diameter of a typical molecule?(c)how does this separation compare with the spacing of atoms in solids,which typically are about 0.3nm apart? asked 4 months ago Answer Hi Obinna, I did some research and I found your question as the QUESTION 3 of this pdf. Link - https://ni.ckzom/145 The solution to the question is there. Hint: 27 degC = 300k Remember that Nickzom Calculator can always help you out with these conversions and teach you how they are done. Link to the Conversions Web app is https://ni.ckzom/145 answered 4 months ago

 Assignment Probability A Pair of dice is thrown,determine the probability of getting (i)a total of 4. (ii) at most a total of 5 (iii)a total not less than 6 asked 5 months ago Answer The probability of getting a 4 is 1/6 since there are 6 possible outcomes and 1 chance of 4 showing up. As for the remaining part of the question I did some research and I think this link would be of help to you https://ni.ckzom/287 answered 5 months ago Answer Hi Chibuzor, I have some answers for you.. Check the attached file below. answered 4 months ago

 Assignment Probability A basket consist of 10 good articles.4 with minor defects and 2 with major defect.2 articles are drawn at random without replacement.find the probability that:(i)both are good (ii)both have major defect (iii)atlast one is good (iv)exactly one is good (v)neither has a major defect (vi)neither is good asked 5 months ago Answer I found a question similar to yours at Quora. Read it up I think it would provide a solution to the probability above. Link - https://ni.ckzom/914 answered 5 months ago

 Assignment Physics An object is to be shot from the level ground at an angle of 53 degree above the horizontal.How fast must it be shot if it is to remain in air for 5s.how far from its starting point will it be when it hits the ground. asked 5 months ago Answer Alright! I checked online to see if I can find a solution to this question and I was able to come up with a PPT file that kind of explains how to solve this kind of question. Here is the link https://ni.ckzom/513 OR you can try making use of Nickzom Calculator. There is a web application under physics that may help in providing a solution to this question. The link to this web application is https://ni.ckzom/513 answered 5 months ago

 Assignment Use Of English State the use of english to your course of study asked 5 months ago Answer What is your course of study? answered 5 months ago

 Assignment Heat And Internet Energy What will be the final temperature if 50g of water at 0degreeC is added to 250g of water at 90degreeC? asked 5 months ago Answer Hi chibuzor, I think you need to check out this link https://ni.ckzom/122 answered 5 months ago

 Assignment Heat And Internal Energy How much heat does 25g of aluminum gives off as it cools from 100degreeC to 20degreeC?for aluminum,c=0.21 cal/gdegreeC asked 5 months ago Answer Chibuzor, There is the web page I found that may help you. If it doesn't kindly let me know. Link - https://ni.ckzom/116 answered 5 months ago

 Assignment Heat And Internal Energy A 20g piece of aluminum,c=0.21 cal/g degreeC 90degreeC is dropped into a cavity in a large block of ice at 0degreeC .how much ice does the aluminum melt? asked 5 months ago Answer Chibuzor, There is the web page I found that may help you. If it doesn't kindly let me know. Link - https://ni.ckzom/778 answered 5 months ago

 Assignment Earthworm Economic importance of earthworm asked 5 months ago Answer 1. The earthworms improve the fertility of soil in different ways and, therefore, they are of utmost importance in agriculture. Actually, the burrowing and soil feeding habits of earthworms make the soil porous which permit both aeration and quick absorption of water. It also permits easy and deep penetration of the plant roots. They also bring the fresh subsoil to the surface which is still finer and rich in organic matters. Charles Darwin has estimated that an acre of earth is inhabited by nearly 50,000 earthworms (a recent estimate suggests that their number may reach up to 25, 00,000 per acre) which may bring more than 18 tons of deeper subsoil to the surface in one year. 2. These are used as bait and food. As bait they are used in fishing. The earthworms were used as food by so many uncivilized people of the world and they are still used as food by Macrea people. The earthworms are eaten upon by frogs, toads, moles, hedgehogs and birds which are of many uses to mankind. 3. Many people earn their livelihood by catching these worms and supplying to scientific laboratories. 4. Ayurvedic and Unani system of therapy suggests that these worms were used in making medicines for the cure of diseases like bladder stones, jaundice, pyorrhoea, piles, rheumatism, etc. Even today, these are used in making various medicines of vital importance in India as well as other countries. Culled: https://ni.ckzom/323 answered 5 months ago

 Assignment Euglena Euglena is not an animal:true or false;in one sentence give the reason for your answer asked 5 months ago Answer Euglena is now known as a protista while it has chloroplasts like a plant, the euglena lacks another characteristic of plants, a cellulose wall. It feeds in animal fashion, but it also produces sugar like a plant does. It has a light-sensitive area called an eyespot. Because it resembles both animals and plants, scientists have resisted categorizing euglena as either one. Please Check Out: https://ni.ckzom/902 answered 5 months ago

 Assignment Algae Describe 2 contributions of algae to the biosphere asked 5 months ago Answer 1. The photosynthesis done by algae is very important to the biosphere because it reduces the amount of carbon dioxide and increases the amount of oxygen in the atmosphere. 2. Some types of algae can cause environmental problems such as red tides and fishy-tasting water. These problems are usually caused by the excessive release of nutrients from farms, sewage, and other human activities. Culled From: https://ni.ckzom/18 answered 5 months ago

 Assignment Algae List the colours of algae and their scientific names asked 5 months ago Answer 1. Green Algae. Green algae are the algae most closely related to plants. They have the same pigments (chlorophyll a and b and carotenoids), the same chemicals in their cell walls (cellulose), and the same storage product (starch) as plants. Green algae may be unicellular or form filaments, nets, sheets, spheres, or complex mosslike structures. There are both freshwater and marine species. Some species of green algae live on snow, or in symbiotic associations as lichens, or with sponges or other aquatic animals. Edible green algae include Chlorella and sea lettuce. There are at least seventeen thousand species of green algae. 2. Diatoms. Diatoms are often regarded as the most beautiful of the algae. Each diatom has a cell wall made of glass that is very finely etched with a species-specific pattern of dots and lines. The patterns on the diatom cell walls are so precise that they were used for years to test the optics of new microscopes. Diatoms are also the most abundant algae in the open ocean and responsible for about one-quarter of all the oxygen gas produced on the earth each year. Diatom populations often bloom in lakes in the spring, providing a major food for zooplankton, forming the base of the aquatic food chain. There are over one hundred thousand species of diatoms. 3. Red Algae. Red algae are almost exclusively marine and include many edible and economically important species, including nori and laver. Red algae are also the source of carageenan and agar , which are used as food thickeners and stabilizers. Red algae are mostly large, complex seaweeds. There are four thousand to six thousand species. 4. Brown Algae. Brown algae are almost exclusively marine and include the largest and most complex seaweeds. Kelp, for example, may be more than 60 meters (200 feet) tall, and forms dense underwater forests off the California coast. Other important brown algae include the rockweeds and Sargassum, for which the Sargasso Sea is named. There are about fifteen hundred species of brown algae. 5. Dinoflagellates. Dinoflagellates are unicellular algae with armor made of cellulose and flagella that cause them to spin as they swim. Dinoflagellates are found in both freshwater and marine ecosystems. Some species of dinoflagellates emit an eerie blue light when disturbed, called bioluminescence . Other dinoflagellates are toxic and responsible for red tides and outbreaks of shellfish poisoning. There are two thousand to four thousand species of dinoflagellates. Culled From: https://ni.ckzom/74 answered 5 months ago

 Assignment Algae What is the major difference between algae and plant asked 5 months ago Answer Algae and plants are similar in that they can produce their own food from nutrients and sunlight by photosynthesis. The main difference between the two is in their complexity. Algae are simple organisms, sometimes unicellular, and even the largest types are relatively simple in structure. True plants on the other hand, are quite complex, with many specialized structures, even in the smallest types. More details is at the reference below Reference: https://ni.ckzom/733 answered 5 months ago

 Assignment Mth103 Given that A is the point (1,3) and that AB and AD are (4/-1) and (2/3) respectively. find coordinate of the vertises B,C, and D of the parallelogram A,B,C,D Given the point A=(1,1) B=(5,4), C=(8,9) and D(0.3) show that A,B,C,D is a trapesium. asked 5 months ago Answer I tried solving your question all to no avail. Check if this link could help though - https://ni.ckzom/273 answered 4 months ago

 Assignment Divided Differences Form the divided difference table for the data (-3,-250), (-1,80),(0,73), (3,40), (5,100) up to and including the 4th divided difference asked 5 months ago Answer I really do not know anything about divided difference table but I think this material may aid you in providing the solution you so require https://ni.ckzom/451 answered 5 months ago

 Assignment Chemistry A hydrocarbon contains 83.7% C, and 16.7% H by mass,the vapour density of the hydrocarbon is 36gdm.find its molecular formula (C=12,H=1,O=16). asked 5 months ago Answer A screenshot from a Chemistry Guru Written By: Ogunlalu Oluwafemi answered 5 months ago

 Assignment Insurance What are the tools to risk management asked 5 months ago Answer I do not know the category of risk management you are referring to but I assumed you meant business. Creating a risk management plan is a must for your business. However, your plan will only be as effective as the tools and techniques you use. Choosing the right tools and techniques will help to reduce the complexity of risk management. The above write up was culled from https://ni.ckzom/475 and I suggest reading through the material to know if the answer you seek is there. If it is not there, you are free to message me on this platform so that I can do more research. answered 5 months ago

 Assignment Thermometer State the application of thermometer. asked 5 months ago Answer Thermometers utilize a range of physical effects to measure temperature. Temperature sensors are used in a wide variety of scientific and engineering applications, especially measurement systems. Temperature systems are primarily either electrical or mechanical, occasionally inseparable from the system which they control (as in the case of a mercury-in-glass thermometer). Thermometers are used in roadways in cold weather climates to help determine if icing conditions exist. Indoors, thermistors are used in climate control systems such as air conditioners, freezers, heaters, refrigerators, and water heaters.[48] Galileo thermometers are used to measure indoor air temperature, due to their limited measurement range. Such liquid crystal thermometers (which use thermochromic liquid crystals) are also used in mood rings and used to measure the temperature of water in fish tanks. Fiber Bragg grating temperature sensors are used in nuclear power facilities to monitor reactor core temperatures and avoid the possibility of nuclear meltdowns. Thermometers are important in food safety where food at temperatures within 41 and 135 °F (5 and 57 °C) can be prone to potentially harmful levels of bacterial growth after several hours which could lead to foodborne illness. This includes monitoring refrigeration temperatures and maintaining temperatures in foods being served under heat lamps or hot water baths.[48] Cooking thermometers are important for determining if a food is properly cooked. In particular meat thermometers are used to aid in cooking meat to a safe internal temperature while preventing over cooking. They are commonly found using either a bimetallic coil, or a thermocouple or thermistor with a digital readout. Candy thermometers are used to aid in achieving a specific water content in a sugar solution based on it's boiling temperature. Indoor-outdoor thermometer Heat meter uses a thermometer to measure rate of heat flow. Thermostats have used bimetallic strips but digital thermistors have since become popular. Alcohol thermometers, infrared thermometers, mercury-in-glass thermometers, recording thermometers, thermistors, and Six's thermometers are used in meteorology and climatology in various levels of the atmosphere and oceans. Aircraft use thermometers and hygrometers to determine if atmospheric icing conditions exist along their flight path. These measurements are used to initialize weather forecast models. Thermometers are used in roadways in cold weather climates to help determine if icing conditions exist and indoors in climate control systems. Culled From https://ni.ckzom/136 answered 5 months ago

 Assignment Standard Deviation And Variation Thanks sir,i got ur answer.but in ur solvings i got lost starting from,standard deviation=square root(sum/x-meanI*2)/N downwards.pls sir can u start from there and solve it again asked 5 months ago Answer Alright chibuzor here is how I am going to help you. I will send to you a link to Nickzom Calculator that will explain to you exactly what I mean all you have to do is enter some values appropriately and click on calculate. Link is https://ni.ckzom/819 answered 5 months ago

 Assignment Standard Deviation And Variation The values 3,1,x,y,4 have mean x bar=3 and stand deviation s=square root of 2.find x and y asked 5 months ago Answer ((3 + 1 + x + y + 4) / 5) = 3 3 + 1 + x + y + 4 = 3 x 5 8 + x + y = 15 x + y = 15 - 8 x + y = 7 ... (1) Obtaining the mean deviation for the values we have: 3 - 3 = 0 1 - 3 = 2 x - 3 y - 3 4 - 3 = 1 Finding the square of the mean deviation we have: (0)^2 = 0 (-2)^2 = 4 (x - 3)^2 = x^2 -6x + 9 (y - 3)^2 = y^2 -6x + 9 (1)^2 = 1 Sum of the square of the mean deviation we then have: 4 + x^2 -6x +9 + y^2 - 6y + 9 + 1 23 + x^2 + y^2 - 6x - 6y Standard Deviation = √((∑|X - Mean|^2) / N) where N = 5 √((23 + x^2 + y^2 - 6x - 6y) / 5) = √2 ... (ii) Squaring both sides we then have: ((23 + x^2 + y^2 - 6x - 6y) / 5) = 2 Multiplying both sides by 5 we have: 23 + x^2 + y^2 - 6x - 6y = 10 x^2 + y^2 - 6x - 6y + 23 - 10 = 0 x^2 + y^2 -6(x + y) + 13 = 0 ... (iii) Substituting Equation (i) in Equation (iii) x^2 + y^2 - 6(7) + 13 = 0 x^2 + y^2 - 42 + 13 = 0 x^2 + y^2 - 29 = 0 x^2 + y^2 = 29 ... (iv) From Equation (iv) we have that x = 2 and y = 5 Answer: x = 2 y = 5 OR x = 5 y = 2 answered 5 months ago

 Assignment Chemistry-electrolysis Calculate the mass of magnesium that would be deposited by 8faradays of electricity? [Mg=24] asked 5 months ago Answer I don't know much about chemistry since I studied Engineering but I am working on integrating Chemistry calculations into Nickzom Calculator at the moment. I did some research online about your question and I came up with a link that would probably show you how to easily solve this problem. The link is https://ni.ckzom/536 I hope it helps you but if it doesn't please do well to message me on this platform so that we could find a solution one way or another. answered 5 months ago

 Assignment System Of Equations I've attached the picture sir. Kindly help me with this urgent question. asked 5 months ago Answer Solution Provided via Timothy"s WhatsApp Account. Message me if you need the solution. answered 5 months ago

 Assignment Graphs how to draw graphs showing the first six multiples of 3. how to draw graphs showing the factors of 42 asked 5 months ago Answer Obtain the values of the first six multiples of 3 and the values of the factors of 42 You can get the values from Nickzom Calculator Link: https://ni.ckzom/926 With these values you can then easily plot the graph using the y and x axis. answered 5 months ago

 Assignment Electrolytic Reaction electrolytic reaction for extraction of calcium from calcium fluoride asked 6 months ago Answer Tetrafluoroborate melts have been shown to be viable electrolytes for the electrochemical production of fluorine from dissolved Formula . The anode reaction at pyrolytic graphite electrodes apparently involves the oxidation of Formula and/or F− to yield Formula and Formula . Formula may be used to trap Formula ; the resulting Formula may be reused in the bath. Observed anode current efficiencies are generally on the order of 50–60% at an optimum anode current density of 40 mA/cm2. The cathode reaction at tin and/or zinc cathodes involves the reduction of Ca2+ to the metal along with the reduction of alkali metal ions to the respective metals. The presence of zinc in the cathode pool appears to favor the deposition of calcium over that of alkali metals. Reference: https://ni.ckzom/740 answered 6 months ago

 Assignment Variation If x varies directly as the square of y and y decreases by 20%, find the percentage change in x asked 6 months ago Answer x = ky^2 --- (1) where k is a constant Since y is reduced by 20%, it implies that the new value for y is: (1 - (20/100))y = (1 - 0.2)y = 0.8y Therefore, x = k(0.8y)^2 x = 0.64ky^2 --- (2) To find the percentage change of x We then compare equation (1) and (2) (1 - 0.64) * 100% 0.36 * 100% 36% Therefore, the percentage change of x is 36%. answered 6 months ago

 Assignment Variations if x varies directly as the square of y and y is reduced by 20%. What is the percentage change of y asked 6 months ago Answer The percentage change of y is 20%. answered 6 months ago

 Assignment Program To Print The Square Of N Numbers Hello , please can somebody help me with my assignment. The assignment is write a program in q basic to print out squares of n numbers, say 1-100 asked 7 months ago Answer DECLARE SUB SERIES ( ) CLS CALL SERIES END SUB SERIES FOR I = 1 TO 100 PRINT I*I, NEXT I END SUB answered 7 months ago