Mathematics Past Questions And Answers
A triangle has vertices P(-1,6), Q(-3, -4) and R(1, -4).Find the midpoint of PQ and QR respectively.
- A. (0,-2) and (-1, -4)
- B. (-1,0) and (-1,-1)
- C. (-2,1) and (0,1)
- D. (-2,1) and (-1,-4)
Find the variance of 2x, 2x-1 and 2x+1
- A. 2/3
- B. 2
- C. √(2/3)
- D. 1
Factorize completely 4abx - 2axy -12b2x + 6bxy
- A. 2x(a - 3b)(2b - y)
- B. 2x(3b - a)(2b - y)
- C. 2x(a - 3b)(y - 2b)
- D. 2x(2b - a)(3b - y)
In the diagram below, ∠PQU=36°, ∠QRT = 29°, PQ||RT. Find ∠PQR
- A. 94°
- B. 65°
- C. 61°
- D. 54°
One shirt can dry in the sun for 30 min. How long will it take for ten shirts to dry if they were put in the sun at the same time?
- a. 2 ½ h
- b. 5h.
- c. 3h
- d. ½ h
The ages, in years, of 50 teachers in a school are given below :
21 37 49 27 49 42 26 33 46 40 50 29 23 24 29 31 36 22 27 38 30 26 42 39 34 23 21 32 41 46 46 31 33 29 28 43 47 40 34 44 26 38 34 49 45 27 25 33 39 40
(a) Form a frequency distribution table of the data using the intervals : 21 - 25, 26 - 30, 31 - 35 etc.
(b) Draw the histogram of the distribution
(c) Use your histogram to estimate the mode
(d) Calculate the mean age.
View Discussion (0)WAEC 2008 THEORY.jpg)
Using ruler and a pair of compasses only,
(a) construct \(\Delta PQR\) such that |PQ| = 7 cm, |PR| = 6 cm and < PQR = 60°.
(b) locate point M, the mid-point of PQ.
(c) Measure < RMQ.
View Discussion (0)WAEC 2000 THEORY.jpg)
< RMQ = 60°.If 8x- 4 = 6x- 10, find the value of 5x,
- A. -35
- B. -15
- C. -3
- D. 3
(a) Find the angle between the vectors \(a = \begin{pmatrix} -3 \\ 4 \end{pmatrix}\) and \(b = \begin{pmatrix} -8 \\ -15 \end{pmatrix}\).
(b) Given that \(a = (4N, 060°)\) and \(b = (3N, 120°)\), find, in component form, the unit vector along \(a - b\).
View Discussion (0)WAEC 2012 THEORYSimplify \(\frac{2^{\frac{1}{2}}\times 8^{\frac{1}{2}}}{4}\)
- A. 1
- B. 2
- C. 4
- D. 16