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Mathematics 1998 WAEC Past Questions

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21
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. \(h=\frac{mr}{n}\)
View Answer & Discuss WAEC 1998
22

Given that \(\frac{6x-y}{x+2y}=2\), find the value of \(\frac{x}{y}\)

  • A. \(\frac{3}{8}\)
  • B. \(\frac{5}{8}\)
  • C. \(\frac{4}{5}\)
  • D. \(\frac{5}{4}\)
  • E. \(\frac{8}{5}\)
View Answer & Discuss (8) WAEC 1998
23

The radius of a geographical globe is 60cm. Find the length of the parallel of latitude 60oN

  • A. \(66\pi cm\)
  • B. \(60\pi cm\)
  • C. \(30\pi cm\)
  • D. \(15\pi cm\)
  • E. \(6\pi cm\)
View Answer & Discuss (3) WAEC 1998
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24

In the diagram above, O is the center if the two concentric circle of radii 13cm and 10cm respectively. Find the area of the shaded portion in the sector with angle 120° at the center

  • A. \(\frac{1}{3}\pi cm^2\)
  • B. \(\pi cm^2\)
  • C. \(3\pi cm^2\)
  • D. \(23\pi cm^2\)
  • E. \(46\pi cm^2\)
View Answer & Discuss (10) WAEC 1998
25

Express as a single fraction: \(\frac{x}{x-2}-\frac{x+2}{x+3}\)

  • A. \(\frac{2x^2 - 3x - 4}{(x-2)(x+3)}\)
  • B. \(\frac{2x^2 + 3x - 4}{(x-2)(x+3)}\)
  • C. \(\frac{2}{(x-2)(x+3)}\)
  • D. \(\frac{ 3x + 4}{(x-2)(x+3)}\)
  • E. \(\frac{3x - 4}{(x-2)(x+3)}\)
View Answer & Discuss (9) WAEC 1998
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