Question

please answer to this question

Answer 1

Mark this answer as brainliest answer

Answer 2

Hey !!

Here is your answer..

Given :-
${10}^{2y} = 25 \\ \\ { ({10}^{y}) }^{2} = {(5)}^{2} \\ \\ {10}^{y} = 5 \\ \\ {( {10}^{y} )}^{ - 1} = {(5)}^{ - 1} \\ \\ {10}^{ - y} = {5}^{ - y} \\ \\ {10}^{ - y} = \frac{1}{5}$
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