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Veseljchak [2.6K]
3 years ago
15

What is circumference of a circle with a radius of 25 feet?

Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

157.0796327 is my answer

dmitriy555 [2]3 years ago
5 0

Answer:

C≈157.08ft

Solution

C=2πr=2·π·25≈157.07963ft

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Surveys conducted in American high schools concluded that 90% of the students in a sample of 400 students had more than one acti
kenny6666 [7]
The sample proportion has an approximately normal distribution, with the mean being the population mean and the standard deviation (i.e. the standard error of the sampling proportion) equal to 

SE = sqrt(p*q/n) where p is the population proportion q is 1-p, and n is the sample size. 

<span>(Typically, for a confkdence interval, the sample proportion and its complement are substituted for p and q.) </span>

The margin of error will be Zc*SE, where Zc is the critical value of Z for the level of confidence required. The confidence interval, then, will be the sample proportion, plus or minus the margin of error. 

For a 90% confidence interval, Zc is 1.645. 

<span>So the margin of error is 1.645 * sqrt(.9*.1/400), roughly .025. So your confidence interval would be around [.875, .925] 


The best and most correct answer among the choices provided by your question is the second choice or letter C which is 3%.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.</span>
4 0
2 years ago
Read 2 more answers
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Mkey [24]
B 6hrs 40 minutes
30000 / 75 = 400
400 minutes put into hours is 6 hours 40 minutes
4 0
1 year ago
12−3/4(d+16)=−5 ANSWER FOR D
antoniya [11.8K]
D=20/3 or in decimal form d=6.666, it keeps going
6 0
2 years ago
Solve -vp+40&lt;95 for v
Leya [2.2K]

-vp+40<95

subtract 40 from each side

-vp < 55

divide by -p (which flips the inequality) assuming p>0

v > -55/p


5 0
3 years ago
The piper family arrived at the campground at the time shown on the clock. I took the family 2 hours and 15 minutes to get to th
aleksklad [387]

Answer:

As you included no picture, I do not know the time on the clock. We can however, work with assumed figures which you can then relate to your question.

Assuming the time on the clock was 10:45 am, if the family took 2 hours and 15 minutes to get to the camp ground, simply subtract this from 10:45 to find out what time they arrived.

Subtract the 2 hours from 10am:

= 10 - 2

= 8am

Subtract the 15 minutes from 45:

= 45 - 15

= 30

Put that together:

= 8:30 am

<em>They left their house at 8:30 am using this scenario. </em>

8 0
3 years ago
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