Waec Mathematics Past Questions and Answers

Question 381:

• WAEC 1994

Factorise: 6x\(^2\) + 7xy - 5y\(^2\)

A. (6x + 5y)(x - y)
B. (2x + 5y)(3x - y)
C. (3x + y)(2x - 5y)
D. (3x + 5y)(2x - y)
E. (2x + y)(3x - 5y)

Question 382:

• WAEC 1994

Solve the equation log₈x - 4log₈x = 2

A. ¹/₄
B. ¹/₂
C. 1
D. 2
E. 4

Question 383:

• WAEC 1994

The angle subtended at the centre by a chord of a circle radius 6cm is 120°. Find the length of the chord.

A. 3cm
B. 6cm
C. \(4\sqrt{2}\) cm
D. \(3\sqrt{3}\) cm
E. \(6\sqrt{3}\) cm

Question 384:

• WAEC 1994

A cuboid of base 12.5cm by 20cm holds exactly 1 litre of water. What is the height of the cuboid? (1 litre =1000cm3)

A. 2cm
B. 4cm
C. 5cm
D. 8cm
E. 10cm

Question 385:

• WAEC 1994

Two ships on the equator are on longitudes 45^oW and 45^oE respectively. How far are they apart along the equator, correct to 2 significant figures? (Take the radius of earth = 6400km and π = 22/7)

A. 15,000km
B. 10,000km
C. 6,400km
D. 5,000km
E. 3,200km