Mathematics Past Questions And Answers
If 85% of x is N3230, what is the value of x?
- A. N2745.50
- B. N3714.50
- C. N3800.00
- D. N4845.00
(a) Copy and complete the table of values, correct to one decimal place, for the relation \(y = 3\sin x + 2\cos x\) for \(0° \leq x \leq 360°\).
| x | 0° | 30° | 60° | 90° | 120° | 150° | 180° | 210° | 240° | 270° | 300° | 330° | 360° |
| y | 3.0 | 1.6 | -2.0 | -3.6 | -3.0 | 2.0 |
(b) Using scales of 2cm to 30°mon the x- axis and 2cm to 1 unit on the y- axis, draw the graph of the relation \(y = 3\sin x + 2\cos x\) for \(0°\leq x \leq 360°\).
(c) Use the graph to solve :
(i) \(3\sin x + 2\cos x = 0\)
(ii) \(2 + 2\cos x + 3\sin x = 0\).
View Discussion (0)WAEC 2016 THEORY.jpg)
What value of x will make the function x(4 - x) a maximum?
- A. 4
- B. 3
- C. 2
- D. 1
In a school, the ratio of girls to boys is 5:6. How many are boys if the total population is 605?
- A. 365
- B. 275
- C. 330
- D. 560
During the 2008 POSTJAMB registration exercise which lasted 15 days, the number of candidates on the first day was 2000 but doubled daily in the next 4 days. Thereafter, it was 250 per day till the end. How many candidates registered for the exercise?
- A. 10 500
- B. 12 500
- C. 15 500
- D. 20 500
Find the distance between the points C(2, 2) and D(5, 6).
- A. 13 units
- B. 7 units
- C. 12 units
- D. 5 units
Three balls are drawn one after the other with replacement, from a bag containing 5 red, 9white and 4 blue identical balls, What is the probability that they are one red, one white and one blue?
- A. 5/102
- B. 5/136
- C. 5/162
- D. 5/204
A man is five times as old as his son. In four years' time, the product of their ages would be 340. If the son's age is y, express the product of their ages in terms of y.
- A. 5y\(^2 - 16y - 380 = 0\)
- B. 5y\(^2 - 24y - 380 = 0\)
- C. 5y\(^2 - 16y - 330 = 0\)
- D. 5y\(^2 + 24y - 324 = 0\)
(a) Prove that the angle which an arc of a circle subtends at the centre is twice that which it subtends at any point on the remaining part of the circumference.
(b)
In the diagram, O is the centre of the circle, < OQR = 32° and < MPQ = 15°. Calculate (i) < QPR ; (ii) < MQO.
View Discussion (0)WAEC 1991 THEORY
Find the range of 4,9,6,3,2,8,10 and 11
- A. 11
- B. 9
- C. 8
- D. 4