Question

if 10^2y=25 ,then 10^-y equals

Answer 1

Hey,

(10)^2y=(5)^2

=>10^y=5

=>(10)^-y=1/(10)^y

=1/5=5^-1.

Hope it helps

Answer 2

Hi...☺

Here is your answer...✌
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${10}^{2y} = 25 \\ \\ (10^{y}) ^{2} = {5 }^{2} \\ \\ = > {10}^{y} = 5 \\ \\ Now ,\\ {10}^{ - y} = \frac{1}{ {10}^{y} } = \frac{1}{5}$
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Thank you ⭐