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3 years ago

Find the radius of each circle. use 3.14for the value of Pie. round your answer to

Mathematics

1 answer:

muminat3 years ago

7 0

9514 1404 393

Answer:

8.6 km

Step-by-step explanation:

The circumference of a circle is given in terms of its radius as ...

C = 2πr

Then the radius can be found from the circumference using ...

r = C/(2π)

Filling in the given values, we find the radius to be ...

r = (54 km)/(2·2.14) = (54 km)/6.28 ≈ 8.59873 km

The radius is about 8.6 km.

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For 15 hours of work, a plumber charges $435. If he charges the same amount for each hour of work, which table shows the correct

Volgvan

Answer:

Step-by-step explanation:

$435 divided by 15 is 29

(I think this is the equation)

7 0

3 years ago

Read 2 more answers

Look at the pic~ find the area of the figure please

Blababa [14]

Answer:

164 m^2

Step-by-step explanation:

14*11=154

5*2=10

10+154=164

8 0

3 years ago

Look at the equation 14n=98 work out the value of 14(n+1)

Allisa [31]

Answer:

The value of 14(n+1) is 112.

Step-by-step explanation:

14n=98

n=98/14

n=7

-------------

14(n+1)=14(7+1)=14(8)=112

5 0

2 years ago

The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of peopl

koban [17]

Answer:

98% of confidence intervals for the Population proportion of people who captured after appearing on the 10 most wanted list

(0.3583 , 0.4579)

Step-by-step explanation:

Explanation:-

Given sample size 'n' = 517

Given data Suppose a sample of 517 suspected criminals is drawn. Of these people, 211 were captured.

'x' =211

The sample proportion

$p^{-} = \frac{x}{n} = \frac{211}{517} =0.4081$

$q^{-} = 1-p^{-} = 1- 0.4081 = 0.5919$

98% of confidence intervals for the Population proportion of people who captured after appearing on the 10 most wanted list

$(p^{-} - Z_{\frac{\alpha }{2} } \sqrt{\frac{p^{-} (1-p^{-} )}{n} } , p^{-} + Z_{\frac{\alpha }{2} } \sqrt{\frac{p^{-} (1-p^{-} }{n} } )$

$(0.4081 - 2.326 \sqrt{\frac{0.4081 (0.5919 )}{517} } , 0.4081+ 2.326\sqrt{\frac{0.4081(0.5919 }{517} } )$

(0.4081-0.0498 , 0.4081 +0.0498)

(0.3583 , 0.4579)

Conclusion:-

98% of confidence intervals for the Population proportion of people who captured after appearing on the 10 most wanted list

(0.3583 , 0.4579)

7 0

3 years ago

What is thirty percent of two hundred ?

shtirl [24]

The answer is 60. Because if u do 30% x by 200 but u need to get rid of the percent which means u divide it by 100 to get rid of a percent and multiply by a hundred to get a percentage. So it would be 30 x 200 divided by 100.

6 0

3 years ago

Read 2 more answers