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Ad libitum [116K]
3 years ago
9

Kyoko is reading a book by her favorite author. She read the first 20 pages in 1/2 of an hour. Reading at the same pace, Kyoko w

ants to determine if she’ll have enough time to finish the book before she has to go to bed.
It will take her 2 hours to read 60 pages.It will take her 3 hours to read 120 pages.It will take her 4 hours to read 180 pages.It will take her 5 hours to read 210 pages.
Mathematics
1 answer:
yarga [219]3 years ago
7 0
<span>It will take her 3 hours to read 120 pages.</span>
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<h3>What are the exponent and power rules?</h3>

The important exponent and power rules are:

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  • (ab)ⁿ = aⁿ × bⁿ; power of a product rule
  • aⁿ × aˣ = aⁿ⁺ˣ; multiplication rule
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<h3>Calculation:</h3>

The given expression is 126^{-3/4}

Using calculator: 126^{-3/4} = 0.0265

Applying the exponent rule for evaluating the given expression:

126^{-3/4}

Applying the negative power rule;

I.e., a⁻ⁿ = 1/aⁿ

⇒ 126^{-3/4}=\frac{1}{126^{3/4}}

Applying fractional exponent rule;

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brainly.com/question/11975096

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