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Mathematics 2013 WAEC Past Questions

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11
If x = 64 and y = 27, evaluate: \(\frac{x^{\frac{1}{2}} - y^{\frac{1}{3}}}{y - x^{\frac{2}{3}}}\)
  • A. 2\(\frac{1}{5}\)
  • B. 1
  • C. \(\frac{5}{11}\)
  • D. \(\frac{11}{43}\)
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12

If \(\frac{1}{2}\)x + 2y = 3  and \(\frac{3}{2}\)x - 2y = 1, find (x + y)

  • A. 3
  • B. 2
  • C. 1
  • D. 5
View Answer & Discuss (2) WAEC 2013
13

Given that \(p^{\frac{1}{3}}\) = \(\frac{\sqrt[3]{q}}{r}\), make q the subject of the equation

  • A. q = p\(\sqrt{r}\)
  • B. q = p3r
  • C. q = pr3
  • D. q = pr\(\frac{1}{3}\)
View Answer & Discuss (12) WAEC 2013
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14
A chord is 2cm from the centre of a circle. If the radius of the circle is 5cm, find the length of the chord
  • A. 2\(\sqrt{21}\)cm
  • B. \(\sqrt{42}\)cm
  • C. 2\(\sqrt{19}\)cm
  • D. \(\sqrt{21}\)cm
View Answer & Discuss (1) WAEC 2013
15

A cube and cuboid have the same base area. The volume of the cube is 64cm\(^3\) while that of the cuboid is 80cm\(^3\). Find the height of the cuboid

  • A. 1cm
  • B. 3cm
  • C. 5cm
  • D. 6cm
View Answer & Discuss (1) WAEC 2013
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