Mathematics Past Questions And Answers
Simplify (x - 3y)2 - (x + 3y)2
- A. 2(x + 3y)
- B. (2x - 3y)
- C. -12xy
- D. 6xy
If p and q are two non zero numbers and 18(p+q) = (18+p)q, which of the following must be true?
- A. q = 18
- B. p <1
- C. p = 18
- D. q< 1
The mean of 2 - t, 4 + t, 3 - 2t, 2 + t and t - 1 is
- A. t
- B. -t
- C. 2
- D. -2
Calculate the total surface area of a cone of height 12cm and base radius 5cm. [Take π = 22/7]
- A. 180 5/7cm2
- B. 240 2/7cm2
- C. 235 5/7cm2
- D. 282 6/7cm2
From the diagram, find the bearing of Q from P.
- A. 236°
- B. 214°
- C. 146°
- D. 124°
Find the roots of the equations: \(3m^2 - 2m - 65 = 0\)
- A. \(( -5, \frac{-13}{3})\)
- B. \(( 5, \frac{-13}{3})\)
- C. \(( 5, \frac{13}{3})\)
- D. \(( -5, \frac{13}{3})\)
Find the median of this data set: 145,57,223,76,453,123,979,57,76,233,435,76
- A. 244
- B. 57
- C. 922
- D. 134
If \(f(x) = 2x^{2} - 3x - 1\), find the value of x for which f(x) is minimum.
- A. \(\frac{3}{2}\)
- B. \(\frac{4}{3}\)
- C. \(\frac{3}{4}\)
- D. \(\frac{2}{3}\)
solve the inequality \((Y-3)<\frac{y}{3}\)
- A. y > -9
- B. y< 3
- C. y > 4
- D. y< 9
(a) Copy and complete the table for the relation \(y = 2 \cos 2x - 1\).
| x | 0° | 30° | 60° | 90° | 120° | 150° | 180° |
| \(y = 2\cos 2x - 1\) | 1.0 | 0 | 1.0 |
(b) Using a scale of 2cm = 30° on the x- axis and 2cm = 1 unit on the y- axis, draw the graph of \(y = 2 \cos 2x - 1\) for \(0° \leq x \leq 180°\).
(c) On the same axis, draw the graph of \(y = \frac{1}{180} (x - 360)\)
(d) Use your graphs to find the : (i) values of x for which \(2 \cos 2x + \frac{1}{2} = 0\); (ii) roots of the equation \(2 \cos 2x - \frac{x}{180} + 1 = 0\).
View Discussion (0)WAEC 1995 THEORY