Answers A 24N force acts on a body such that it changes its velocity from 5m/s… A 24N force acts on a body such that it changes its velocity from 5m/s to 9m/s in… Read More
Answers If (2sin^{2} theta = 1 + cos theta, 0° leq theta leq 90°), find the… If (2sin^{2} theta = 1 + cos theta, 0° leq theta leq 90°), find the value of (theta). … Read More
Answers In calculating the mean of 8 numbers, a boy mistakenly used 17 instead of 25… In calculating the mean of 8 numbers, a boy mistakenly used 17 instead of 25 as one of… Read More
Answers Simplify: (^{n}C_{r} ÷ ^{n}C_{r-1}) Simplify: (^{n}C_{r} ÷ ^{n}C_{r-1}) A. (frac{n(n-r)}{r}) B. (frac{n}{r(n-r)}) C. (frac{1}{r(n-r)}) D. (frac{n+1-r}{r}) Correct Answer: Option D Explanation (^{n}C_{r} =… Read More
Answers Four fair coins are tossed once. Calculate the probability of having equal heads and tails. Four fair coins are tossed once. Calculate the probability of having equal heads and tails. A. (frac{1}{4}) B.… Read More
Answers Given that (y = 4 – 9x) and (Delta x = 0.1), calculate (Delta y). Given that (y = 4 – 9x) and (Delta x = 0.1), calculate (Delta y). A. 9.0 B.… Read More
Answers A particle starts from rest and moves in a straight line such that its acceleration… A particle starts from rest and moves in a straight line such that its acceleration after t seconds… Read More
Answers Find (int frac{x^{3} + 5x + 1}{x^{3}} mathrm {d} x) Find (int frac{x^{3} + 5x + 1}{x^{3}} mathrm {d} x) A. (x^{2} + 10x + c) B. (x… Read More
Answers If (begin{vmatrix} 1+2x & -1 \ 6 & 3-x end{vmatrix} = -3 ), find the… If (begin{vmatrix} 1+2x & -1 \ 6 & 3-x end{vmatrix} = -3 ), find the values of x.… Read More
Answers Each of the 90 students in a class speak at least Igbo or Hausa. If… Each of the 90 students in a class speak at least Igbo or Hausa. If 56 students speak… Read More