1990 WAEC SSCE Mathematics Past Questions

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1990

If the radius of the parallel of latitude 30oN is equal to the radius of the parallel of latitude θoS, what is the value of θ?

1990

calculate the surface area of a sphere of radius 7cm [Take π = 22/7]

1990

Solve the equation 2a2 - 3a - 27 = 0

1990

Find the value of m which makes x2 + 8 + m a perfect square

1990

Solve the equation 7y2 = 3y

1990

Factorize 2e2 - 3e + 1

1990

Factorize x2 + 4x - 192

1990

In the diagram above, O is the center of the circle with radius 10cm, and ∠ABC = 30o. Calculate, correct to 1 decimal place, the length of arc AC [Take π = 22/7]

1990

The area shaded with vertical lines is the solution set of the inequalities:

1990

The area shaded with horizontal lines is the solution set of the inequalities:

1990

In a class of 80 students, every student had to study economics or geography, or both economics and geography. If 65 students studied economics and 50 studied geography, how many studied both subjects?

1990

Find the sum of the first five terms of the G.P 2.6 18 ....

1990

Find the values of x for which y = 5

1990

From the graph determine the roots of the equation y = 2x2 + x - 6

1990

Find the 4th term of an A.P, whose first term is 2 and the common difference is 0.5

1990

While doing his physics practical, Idowu recorded a reading as 1.12cm instead of 1.21cm. Calculate his percentage error

1990

If log x = 2.3675 an log y = 0.9750, what is the value of x + y? Correct to three significant figures

1990

Evaluate using the logarithm table, log(0.65)2

1990

Simplify log√8/log8

1990

Given that 1/3log10 P = 1, find the value of P

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