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Mathematics 2015 WAEC Past Questions

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31
Make K the subject of the relation T = \(\sqrt{\frac{TK - H}{K - H}}\)
  • A. K = \(\frac{H(T^2 - 1)}{T^2 - T}\)
  • B. K = \(\frac{HT}{(T - 1)^2}\)
  • C. K = \(\frac{H(T^2 + 1)}{T}\)
  • D. K = \(\frac{H(T - 1)}{T}\)
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32
Which of the following is used to determine the mode of a grouped data?
  • A. Bar chart
  • B. Frequency polygon
  • C. Ogive
  • D. Histogram
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33

The area of a rhombus is 110 cm\(^2\). If the diagonals are 20 cm and (2x + 1) cm long, find the value of x.

  • A. 5.0
  • B. 4.0
  • C. 3.0
  • D. 2.5
View Answer & Discuss (4) WAEC 2015
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34

Simplify: \(\frac{3x - y}{xy} - \frac{2x + 3y}{2xy} + \frac{1}{2}\)

  • A. \(\frac{4x + 5y - xy}{2xy}\)
  • B. \(\frac{5y - 4x + xy}{2xy}\)
  • C. \(\frac{5x + 4y - xy}{2xy}\)
  • D. \(\frac{4x - 5y + xy}{2xy}\)
View Answer & Discuss (2) WAEC 2015
35
A farmer uses \(\frac{2}{5}\) of his land to grow cassava, \(\frac{1}{3}\) of the remaining for yam and the rest for maize. Find the part of the land used for maize
  • A. \(\frac{2}{15}\)
  • B. \(\frac{2}{5}\)
  • C. \(\frac{2}{3}\)
  • D. \(\frac{4}{5}\)
View Answer & Discuss (3) WAEC 2015
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