Mathematics 2015 WAEC Past Questions

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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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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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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

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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. \(\frac{4x - 5y + xy}{2xy}\)

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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. \(\frac{4}{5}\)

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