Question on: WAEC Mathematics - 2005

If (log_9x= 1.5),find x

A
36
B
27
C
24.5
D
13.5
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Correct Option: B

(log_9x= 1.5\Rightarrow x = 9^{1.5} = 9^{\frac{3}{2}}=(3^2)^{\frac{3}{2}}=3^3=27)

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