Question
Find $x$ in the following when: $\log _{10} 0.0001 = x$
✓
Answer
$\log _{10} 0.0001 = x$
$\Rightarrow 0.0001 = 10^x$
$\Rightarrow 10^x = 10^{-4}$
$\therefore x = -4.$
$\Rightarrow 0.0001 = 10^x$
$\Rightarrow 10^x = 10^{-4}$
$\therefore x = -4.$
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