Mathematics Past Questions And Answers
Calculate the distance between points (-2, -5) and (-1, 3)
- A. \(\sqrt{5}\) units
- B. \(\sqrt{17}\) units
- C. \(\sqrt{65}\) units
- D. \(\sqrt{73}\) units
(a) Solve the simultaneous equations 3y - 2x = 21 ; 4y + 5x = 5.
(b) Six identical cards numbered 1 - 6 are placed face down. A card is to be picked at random. A person wins $60.00 if he picks the card numbered 6. If he picks any of the other cards, he loses $10.00 times the number on the card. Calculate the probability of (i) losing ; (ii) losing $20.00 after two picks.
View Discussion (0)WAEC 1999 THEORYA box contains 13 currency notes, all of which are either N50 or N20 notes. The total value of the currency notes is N530. How many N50 notes are in the box?
- A. 4
- B. 6
- C. 8
- D. 9
If y = 2x - sin2x, find dy/dx when x = π/4
- A. π
- B. -π
- C. π/2
- D. -π/2
A particle of mass 2.5 kg is moving at a speed of 12 m/s. If a force of magnitude 10 N acts against it, find how long it takes to come to rest.
- A. 1.5 s
- B. 3.0 s
- C. 4.0 s
- D. 6.0 s
What is the value of sin(-690)?
- A. \(\frac{\sqrt{3}}{2}\)
- B. -\(\frac{\sqrt{3}}{2}\)
- C. \(\frac{-1}{2}\)
- D. \(\frac{1}{2}\)
The bar chart below shows the distribution of marks in a class test. If the pass mark is 5, what percentage of students failed the test?
- A. 10%
- B. 20%
- C. 50%
- D. 60%
Factorize; (2x + 3y)2 - (x - 4y)2
- A. (3x - y)(x + 7y)
- B. (3x + y)(2x - 7y)
- C. (3x + y)(x - 7y)
- D. (3x - y)(2x + 7y)
I. Rectangular bars of equal width
II. The height of each rectangular bar is proportional to the frequency of the corresponding class interval.
III. Rectangular bars have common sides with no gaps in between
A histogram is described completely by
- A. I, II and III
- B. I and II
- C. II and III
- D. I and III
Which of the following is not a property of all parallelogram?
- A. the diagonal bisects each other
- B. Each diagonal bisects the area
- C. the diagonal cut at right angles
- D. The opposite sides are equal