Waec Mathematics Past Questions and Answers

Question 551:

• WAEC 1998

Make S the subject of the formula: \(V = \frac{K}{\sqrt{T-S}}\)

A. \(T-\frac{K^2}{V^2} = S\)
B. \(T+\frac{K^2}{V^2} = S\)
C. \(T-\frac{K^2}{V} = S\)
D. \(T-\frac{K}{V} = S\)
E. \(T-\frac{K}{V^2} = S\)

Question 552:

• WAEC 1998

Find the equation whose roots are \(\frac{2}{3}and \frac{-1}{4}\)

A. \(12x^2+11x+2=0\)
B. \(12x^2-11x+2=0\)
C. \(x^2-\frac{11}{12}x+2=0\)
D. \(x^2+\frac{11}{12}x-2=0\)
E. \(12x^2+11x+2=0\)

Question 553:

• WAEC 1998

Find (X-Y) if 4x - 3y = 7 and 3x - 2y = 5

A. 4
B. 3
C. 2
D. -2
E. -3

Question 554:

• WAEC 1998

solve the inequality \((Y-3)<\frac{y}{3}\)

A. Y > -9
B. Y < 3
C. Y > 4
D. Y < 9
E. Y > 0

Question 555:

• WAEC 1998

If h(m+n) = m(h+r) find h in terms of m, n and r

A. \(h=\frac{mr}{2m+n}\)
B. \(h=\frac{mr}{n+m}\)
C. \(h=\frac{m+n}{n}\)
D. \(h=\frac{m+n}{m}\)
E. \(h=\frac{mr}{n}\)