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Tresset [83]
3 years ago
10

What’s the radius of a circle with the circumference of 37.68 feet

Mathematics
1 answer:
Lina20 [59]3 years ago
7 0

Answer:

r≈6ft

Step-by-step explanation:

Using the formula

C=2πr

Solving forr

r=C

2π=37.68

2·π≈5.99696ft

pls mark as brainliest

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Suppose the scores on a test given to all juniors in a school district are normally distributed with a mean of 74 and a standard
ivann1987 [24]

Answer:

\mu -\sigma = 66 , \mu +\sigma = 82

\mu -2\sigma = 58 , \mu +2\sigma = 90

\mu -3\sigma = 50 , \mu +3\sigma = 98

And in the figure attached we see the limits with the percentages associated.

Step-by-step explanation:

For this case we know that the random variable of interest is the scores on a test given to all juniors in a school district follows a normal distribution with the following parameters:

X \sim N(\mu= 74, \sigma =8)

For this case we know from the empirical rule that within one deviation from the mean we have approximately 68.2% of the data, within 2 deviations from the mean we have 95% and within 3 deviation 99.7%

We can find the limits and we got:

\mu -\sigma = 66 , \mu +\sigma = 82

\mu -2\sigma = 58 , \mu +2\sigma = 90

\mu -3\sigma = 50 , \mu +3\sigma = 98

And in the figure attached we see the limits with the percentages associated.

7 0
3 years ago
Find the volume of th] cylinder. Round your answer to the nearest tenth if necessary. Use 3.14 for 1.
spayn [35]

Answer:197.8

The formula for a cylinder is 3.14*r^2*h but if you don't round to the nearest tenth the the answer is 197.82034.

Step-by-step explanation:Step one mutiply 3^2=9, Step two mutiply 3.14*

9=28.26, Step three mutiply 28.26*7=197.82.But if you round 197.82034 to the nearest tenth which is moving one decimal place to the right you'll will get 197.8.

6 0
2 years ago
8.4 divided by unknown gives you 2.8 what is the unknown
Anna007 [38]

Answer:

3

Step-by-step explanation:

8.4 ÷ 3 = 2.8

(Hopefully this answers your question)

6 0
3 years ago
Subtract. Write your answer in simplest form.<br><br> 3 1/8 - 7/12<br><br> 2<br> 2<br> 3<br> 3
Agata [3.3K]
2 13/24
i hope this helped
8 0
3 years ago
Pls HELP I'LL MARK BRAINLEST
Vesnalui [34]
Angles of a triangle add up to 180 degrees and then we take away the right angle
180-90=90
5x+5x=10x
90/10=9
x=9
6 0
2 years ago
Read 2 more answers
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