Question 1Find ${dy}/{dx}$ if y = $3/{√x }$A.-(3/2)x-3/2B.3x-3/2C.(3/2)x-3/2D.(3/4)x-3/2Objective Show full explanation
Question 2If the mean of the numbers a,b,c,d,e is x, find the mean of numbers a + k, b + 2k, c - k, d - 2k, e A.xB.x + kC.x - kD.2xObjective Show full explanation
Question 3The circle $2x^2 + 2(y - 3/2)^2 = 2$ has centre and radius respectively as A.(0, 3/2) and 2B.(0, -3/2) and 1C.(3/2, 0) and 2D.(0, 3/2) and 1 Objective Show full explanation
Question 4A student's annual interest on his savings account is N5.00. If the rate of interest is 9 1/2%, find the amount he deposited to the nearest naira.A.N53.14B.N47.63C.N52.63D.N51.15E.N41.65Objective Show full explanation
Question 5Without using tables find the value of Cos 105° A.√3/4(1 - √3)B.√2/4(1 - √5)C.√2/4(1 - 3)D.√3E.(1 - √5)Objective Show full explanation
Question 6Multiply x2 + x + 1 by x2 - x + 1A.x4 + 3x2 + x + 1B.x4 + x2 + 1C.x4 + 4x2 + 6x + 1D.x4 - 6x2 - 4x + 1E.x4 - x3 - x2 - x + 1Objective Show full explanation
Question 7Which of the following is not a factor of 124 - 54? A.7B.13C.17D.49E.169Objective Show full explanation
Question 9A father in now three times as old as his son. Twelve years ago, he was six times as old as his son. How old arc the son and the father? A.20 and 45B.100 and 150C.45 and 65D.35 and 75E.20 and 60 Objective Show full explanation
Question 10Solve the equation: (log3X)2 - 6log3X + 9 = 0 A.27B.9C.1/27D.18E.81Objective Show full explanation