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3 years ago

10

In the library where you work, it usually takes you 2 hours to shelve 5 carts of books. At this rate, about how many minutes sho

uld it take you to shelve 1 cart of
books?

1 answer:

Setler79 [48]3 years ago

5 0

Answer: 24 min

Step-by-step explanation:

2 hrs / 5 carts = 120 min / 5 carts

120 / 5 = 24 min / 1 cart

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Answer: <em>3. The correct option is: A) 3.57 decibels.</em>

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Step-by-step explanation:

3. Sound intensity is cut to 44% of its original level. That means, if the original sound intensity was 100, then now sound intensity will be 44.

So, $I_{0}= 100$ and $I= 44$

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$L= 10log(\frac{44}{100})\\ \\ L= 10log(0.44)\\ \\ L= 10(-0.3565...)=-3.565...\approx -3.57$

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So, the loudness would be reduced by 3.57 decibels.

6. Given expression is: $2ln(x) - 5ln(c)$

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Now using the formula, $log(a)-log(b)= log(\frac{a}{b})$ , we will get....

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x=45

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