Waec Mathematics 1993 Past Questions and Answers

Question 26:

• WAEC 1993

Simplify \(\frac{2.25}{0.015}\) leaving your answer in standard form

A. 1.5 x 10^-4
B. 1.5 x 10^-2
C. 1.5 x 10^-3
D. 1.5 x 10¹
E. 1.5 x 10²

Question 27:

• WAEC 1993

State the fifth and seventh terms of the sequence \(-2, -3, -4\frac{1}{2}, ...\)

A. \(-\frac{81}{8}, -\frac{729}{32}\)
B. \(\frac{8}{81}, \frac{72}{39}\)
C. \(\frac{27}{729}, \frac{718}{39}\)
D. \(-\frac{27}{16}, -\frac{79}{81}\)
E. \(-\frac{21}{8}, \frac{32}{618}\)

Question 28:

• WAEC 1993

A plane tiles 90km on a bearing 030° and then flies 150km due east.

How far east of the starting point is the plane?

A. 120km
B. 165km
C. 195km
D. (150 + 45√3)km
E. 240km

Question 29:

• WAEC 1993

If sin x = cos 50^o, then x equals

A. 40^o
B. 45^o
C. 50^o
D. 90^o
E. 130^o

Question 30:

• WAEC 1993

From a point on the edge of the sea, one ship is 24km away on a bearing S 50^oE and another ship is 7km away on a bearing S40^oW. How far apart are the ships?

A. 20km
B. 24km
C. 25km
D. 31km
E. 84km