waecmaths question:
If ${{\log }_{9}}x=1.5$ find x
Option A:
35
Option B:
27
Option C:
24.5
Option D:
13.5
waecmaths solution:
$\begin{align} & {{\log }_{9}}x=1.5 \\ & x={{9}^{1.5}}={{({{3}^{2}})}^{\tfrac{3}{2}}}={{3}^{3}}=27 \\\end{align}$
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