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Verizon [17]
3 years ago
15

If U=pi(r+h),find r when U=16 1/2 and h=2 solve this question by take the value of pi 22/7

Mathematics
1 answer:
I am Lyosha [343]3 years ago
4 0
U=\pi (r+h) \\\\ 16 \frac{1}{2}= \frac{22}{7}\cdot (r+2) \\\\ \frac{33}{2} : \frac{22}{7}=r+2 \\\\ \frac{\not 33}{2}\cdot \frac{7}{\not 22}=r+2 \\\\ \frac{3}{2} \cdot \frac{7}{2}=r+2 \\\\ \frac{21}{4}=r^{(4}+2^{(4} \\\\ 21=4r+8 \\\\ 4r=21-8 \\\\ 4r=13 \\\\ \boxed{r=\frac{13}{4}}
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#22. We are given that y = 1/4. So, we want to plug this value into the expression 15/y:

15/(1/4)

When you divide by a fraction, you should follow the rule “flip the guy and multiply”. Basically, 15/(1/4) = 15 * 4 = 60.

The answer for #22 is (D).

#23. We can use a proportion:

(The shaded area)/(entire circle area) = (360 - 60)/360

But, we don’t have to find the areas of the region and circle; we can just solve the fraction:

(360 - 60)/360 = 300/360 = 30/36 = 5/6

The answer for #23 is (A).

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Answer:

The price of price of the stock after it has been owned for 12 weeks is $92.55

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Since , x represents the number of weeks the stock has been owned.

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We get the value of y , the price of stocks.

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More can be learned about the interpretation of the graph of a function at brainly.com/question/3939432

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