Answers In the diagram, a mass of 12kg hanging from a light inextensible string is pulled… In the diagram, a mass of 12kg hanging from a light inextensible string is pulled aside by a… Read More
Answers Find the angle between (over {OP}) = ((^{-3}_{-4})) and (over{OQ}) = ((^8_{-15})) Find the angle between (over {OP}) = ((^{-3}_{-4})) and (over{OQ}) = ((^8_{-15})) Explanation |(over{OP})| = (sqrt{(-3)^2 + (-4)^2})… Read More
Answers . (frac{T}{sin 90^o}) = (frac{120}{sin 135^o}) and found T = 169.71N (b) (frac{R}{sin 135^o}) =… (a). (frac{T}{sin 90^o}) = (frac{120}{sin 135^o}) and found T = 169.71N (b) (frac{R}{sin 135^o}) = (frac{120}{sin 135^o}) R… Read More
Answers Three soldies, X, Y and Z have probabilities (frac{1}{3}, frac{1}{5}) and (frac{1}{4}) respectively of hitting… Three soldies, X, Y and Z have probabilities (frac{1}{3}, frac{1}{5}) and (frac{1}{4}) respectively of hitting a target. If… Read More
Answers The distribution of the masses of a group of persons is shown in the following… The distribution of the masses of a group of persons is shown in the following table Mass/kg 10.5… Read More
Answers If (alpha) and (beta) are the roots of the equation 3x(^2) + 4x – 5… If (alpha) and (beta) are the roots of the equation 3x(^2) + 4x – 5 = 0, find… Read More
Answers Given that ((_r^n)) = (^nC_r), simplify ((^{2x + 1}_{3})) – ((^{2x – 1}_3)) – 2((^x_2)) Given that ((_r^n)) = (^nC_r), simplify ((^{2x + 1}_{3})) – ((^{2x – 1}_3)) – 2((^x_2)) Explanation ((^{2x +… Read More
Answers Find the equation of the circle centre (2. 3) which passes through the y -… Find the equation of the circle centre (2. 3) which passes through the y – intercept of the… Read More
Answers Differentiate from first principles, with respect to x, (3x(^2) + 2x – 1) Differentiate from first principles, with respect to x, (3x(^2) + 2x – 1) Explanation Substitute x by (x… Read More
Answers The position vectors of points P, Q and R with respect to the origin are… The position vectors of points P, Q and R with respect to the origin are ((4i – 5j),… Read More