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Veseljchak [2.6K]
3 years ago
7

Need another answer bad

Mathematics
1 answer:
tino4ka555 [31]3 years ago
3 0

Step-by-step explanation:

Find AC (USE PITAGOR)

Then :

(AC/2)*(AC/2)*PI

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In scientific notation it would just be 3.06 x 0, it is the same thing as the regular notation.
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if there is 8 bags of trail mix and each bag contains 3 and 1/2 and it is shared among 12 hikers how many cups of trail mix will
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3x + y = 8 <br> X - 3y = 11
drek231 [11]

Answer:

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5 0
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Read 2 more answers
Direct mail advertisers send solicitations​ ("junk mail") to thousands of potential customers in the hope that some will buy the
Arte-miy333 [17]

Answer:

The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 1160, \pi = \frac{144}{1160} = 0.1241

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1241 - 1.645\sqrt{\frac{0.1241*0.8759}{1160}} = 0.1082

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1241 + 1.645\sqrt{\frac{0.1241*0.8759}{1160}} = 0.14

The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%

3 0
3 years ago
It took Xavier Munny 17 seconds to eat 20 DVDs. About what is Xavier's "eating rate" in DVDs per minute?
sertanlavr [38]

Answer

Find out the Xavier Munny  eating rate  in DVDs per minute .

To prove

As given

Xavier Munny 17 seconds to eat 20 DVDs.

As 1 mintues = 60 seconds

1\ second = \frac{1}{60}\ mintues

First convert 17 seconds into mintues.

17\ second = \frac{17}{60}\ mintues

Thus

In\ \frac{17}{60}\ mintues\ Xavier\ Munny \ eat\ 20\ DVDs.

Xavier\ Munny\ eats\ per\ mintues = \frac{20}{\frac{17}{60} }

Xavier\ Munny\ eats\ per\ mintues = {\frac{20\times 60}{17} }

Xavier\ Munny\ eats\ per\ mintues = 70.6

Therefore the eating rate in DVDs per minute is 70.6 mintues.

7 0
3 years ago
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