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3 years ago

15

Need help With these math questions

1 answer:

GrogVix [38]3 years ago

3 0

Answer:

ion know

Step-by-step explanation:

i think its -6,-50 and 5,70

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

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<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>

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<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>

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