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WAEC Mathematics 2019 Paper

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Question : 2

Total: 50

Evaluate: (0.064) -

\;\frac{1}{3}

$\;\frac{5}{2}$
$\;\frac{2}{5}$
- $\;\frac{2}{5}$
- $\;\frac{5}{2}$

Solution:

(0.064) $^{- \;\frac{1}{3}}$

= ( $\;\frac{64}{1000}$ ) $^{-\;\frac{1}{3}}$

= 3 $\sqrt{\;\frac{1000}{64}}$

= $\;\frac{10}{4}$

= $\;\frac{5}{2}$

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