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iogann1982 [59]
2 years ago
15

If 10^2y = 25, then 10^-y equals:(a) -1/5(b) 1/625(c) 1/50(d) 1/25(e) 1/5​

Mathematics
2 answers:
Gemiola [76]2 years ago
8 0
<h3><u>given</u><u>:</u></h3>

<u>10 ^{2y}  = 25</u>

<h3><u>to</u><u> </u><u>find</u><u>:</u></h3>

<u>{10}^{y}  = .......</u>

<h3><u>solution</u><u>:</u></h3>

<u>10 ^{2y}  = 25</u>

<u>(10y {)}^{2}  =  {5}^{2}</u>

<u>10y = 5</u>

<u>\frac{1}{ {10}^{y} }  =  \frac{1}{5}</u>

<u>{10}^{ - y}  =  \frac{1}{5}</u>

<u>therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>correct</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>option</u><u> </u><u>E</u><u>.</u>

Eddi Din [679]2 years ago
8 0

the correct option is <u>option e</u>.

hope this helps you

have a great day

please give me brainliest.

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