Waec Mathematics Past Questions and Answers

Question 486:

• WAEC 1997

Make q the subject of the relation t = √^pq/_r - r²

A. Q = rt²/p - r³
B. Q = t²/p - r²
C. Q = rt/p - r³
D. Q = p - r³/rt²
E. Q = rt²(p - r³ )

Question 487:

• WAEC 1997

P varies inversely as the square of W. When W = 4, P = 9. Find the value of P when W = 9

A. 729/16
B. 6
C. 4
D. 16/9
E. 4/3

Question 488:

• WAEC 1997

If x varies over the set of real numbers, which of the following is illustrated in the diagram above?

A. -2 ≤ x < 3
B. -2 < x ≤ 3
C. -2 < x < 3
D. -2 ≤ x ≤ 3
E. X ≥ 3

Question 489:

• WAEC 1997

In the triangle XYZ , XM is the altitude from X to YZ.XY = 13cm, XZ = 15cm and YM = 5cm. Find the length of YZ

A. 9cm
B. 12cm
C. 14cm
D. 19.85cm
E. 23cm

Question 490:

• WAEC 1997

Two points P and Q are on longitude 67°W. Their latitudes differ by 90°. Calculate their distance apart in terms of π. (Take radius of the earth = 6400km).

A. 6400πkm
B. 6400km/π
C. 3200πkm
D. 3200km
E. 3200km/π