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Bricks Logarithm

Given log 1...

Question

Given ${log}_{10} x = a, {log}_{10} y = b$
Write down $10^{a - 1}$ in terms of $x$ .

\frac{10}{x}

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10 x

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x

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\frac{x}{10}

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Solution

The correct option is D $\frac{x}{10}$
${log}_{10} x = a$
$10^{a} = x$

$∴ 10^{a - 1} = \frac{10^{a}}{10^{1}} = \frac{x}{10}$

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