Mathematics Past Questions and Answers

Express 37.05 x 0.0042 in standard form

A 15.561 x 10²
B 1.5561 x 10^-4
C 1.556 x 10^-1
D 1.5561 x 10¹
E 1.55 x 10¹

Question 22:

Find the values of x for which the expression \(\frac{(x - 3)(x - 2)}{x^2 + x - 2}\)

A 1, -2
B -1, 2
C 2, 3
D -1. -2
E -2, -3

Question 23:

A stone Q is tied to a point P vertically above Q by an inelastic string of length 2 meters. How high does the stone rise when the string is inclined at an angle 60^o to the vertical?

A It does not rise
B 2\(\sqrt{3}\) meters
C 3 meters
D 1 meters
E 3

Question 24:

Express 130 kilometers per second in meters per hour

A 7.8 x 10^-5
B 4.68 x 10⁶
C 7,800,000
D 4.68 x 10⁸
E 7.80 x 10⁵

Question 25:

The quantity y is partly constant and partly varies inversely as the square of x. With P and Q as constants, a possible relationship between x and y is

A Y = Q + \(\frac{P}{x^2}\)
B Y = Q + px
C Y = \(\frac{PQ}{x^2}\)
D Y = Q - \(\frac{P}{x^2}\)