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Firdavs [7]
3 years ago
12

Cual es la circunferencia de un circulo cuyo diametro es de 8

Mathematics
1 answer:
ra1l [238]3 years ago
7 0

Answer:

C=3,14xd

C=3,14x8= 25,12

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Wrens first display box is 6 inches long,9 inches wide,and 4 inches high.what is the volume of the display box
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To find the volume, multiply length x width x height.
So you multiply 6 x 9 x 4. 

So the volume of the display box is 216 inches cubed.
3 0
3 years ago
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A half-dollar coin issued by the United States Mint measures 30.61 millimeters across. Nick has 9 half dollars. He lines them up
Paraphin [41]

Answer:

Step-by-step explanation:

137,745 mm

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2 years ago
To what expression must 5a square-4a+3 be added to make the sum zero??​
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Answer:

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Additive inverse of (5a² - 4a + 3) should be added to make them zero

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4 0
2 years ago
A segment with endpoints (3,7) and (-8,7) is rotated around the origin. how long will the new segment be ?
amid [387]
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4 0
3 years ago
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A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true prop
Katyanochek1 [597]

Answer:   (0.367,\ 0.473)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

, where \hat{p} is the sample proportion, n is the sample size , z_{\alpha/2} is the critical z-value.

Given : Significance level : \alpha:1-0.99=0.01

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Sample proportion: \hat{p}=\dfrac{36}{85}\approx0.42

Now, the  99% confidence level will be :

\hat{p}\pmz_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.42\pm(2.576)\sqrt{\dfrac{0.42(1-0.42)}{85}}\\\\\approx0.42\pm0.053\\\\=(0.42-0.053,\ 0.42+0.053)=(0.367,\ 0.473)

Hence, the  99% confidence interval estimate of the true proportion of families who own at least one DVD player is  (0.367,\ 0.473)

3 0
3 years ago
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