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gogolik [260]
3 years ago
7

the circulation of a newsletter decreased from 3,200 to 2,464 what was the percent of decrease in circulation?

Mathematics
2 answers:
deff fn [24]3 years ago
7 0

so it went from 3200 to 2464, so their difference is 3200 - 2464 = 736.

now, if we take 3200 to be the 100%, what is 736 off of it in percentage?


\bf \begin{array}{ccll}
amount&\%\\
\cline{1-2}
3200&100\\
736&x
\end{array}\implies \cfrac{3200}{736}=\cfrac{100}{x}\implies x=\cfrac{736\cdot 100}{3200}\implies x=23

atroni [7]3 years ago
6 0

The answer is to your question is 736

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A large washer has an outer radius of 10mm and a hole with a diameter of 14mm. What is the area of the top surface of the washer
choli [55]
<h2>Answer:</h2>

The area of the top surface of the washer is:  160.14 square mm.

<h2>Step-by-step explanation:</h2>

The top of the surface is in the shape of a annulus  with a outer radius of 10 mm and a inner radius of 7 mm ( since the diameter of the hole is: 14 mm and we know that the radius is half of the diameter)

Now, we know that the area of the annulus region is given by:

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Here we have:

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Hence, we have:

Area\ of\ top\ surface=\pi (10^2-7^2)\\\\i.e.\\\\Area\ of\ top\ surface=\pi (100-49)\\\\i.e.\\\\Area\ of\ top\ surface=\pi\cdot 51\\\\i.e.\\\\Area\ of\ top\ surface=160.14\ mm^2

4 0
3 years ago
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A dish has 212 bacteria in it. The population of the bacteria will grow ata rate of 80% every 2 days. How many bacteria will be
mr_godi [17]
If they are growing 80% for every twodays, it would be 40% for every one day.

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The answer is C.) 2002
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Step-by-step explanation:

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