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Vesnalui [34]
3 years ago
12

Help me please hurry!!

Mathematics
1 answer:
liubo4ka [24]3 years ago
4 0

Answer:

answer is 36 centimeter

Step-by-step explanation:

volume of a cylinder=πr^2h

1696=3.14*r^2*15

1696=47.1=r^2

1696-47.1=r^2

1648.9=r^2

\sqrt{1648.9} =r

40.60 =r

here according to the question and option given 40.60 is closest to 36 centimeters.so answer is option d.

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Answer:

D

Step-by-step explanation:

A rational number will either end or repeat forever like the first three, but the fourth one, pi, will go on forever and never repeat, making it irrational.

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You borrow $2,000 for a period of 4 years you are charged simple interest at a rate of 3% how much will you repay at the end of
Aleks [24]
At the end of 4 years you will pay a extra 240 dollars 
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Boatesville is 63 4/5 kilometers from Stanton. A bus traveling from Stanton is 24 1/3 kilometers from Boatesville. How far has t
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6 0
2 years ago
The following confidence interval for the population proportion for how many U.S. adults do not get enough fruits and vegetables
Zielflug [23.3K]

Answer:

The interval is constructed at 93% confidence.

Step-by-step explanation:

Confidence interval concepts:

A confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

The margin of error is the difference between these two bounds, divided by 2.

Confidence interval of proportions concepts:

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}.

The margin of error is:

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

In this problem, we have that:

2050 people, so n = 2050.

Lower bound: 0.878

Upper bound: 0.903

\pi = \frac{0.878 + 0.903}{2} = 0.8905

M = \frac{0.903 - 0.878}{2} = 0.0125

Confidence level:

We have to find z.

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

0.0125 = z\sqrt{\frac{0.8905*0.1095}{2050}}

0.0069z = 0.0125

z = \frac{0.0125}{0.0069}

z = 1.81

z = 1.81 has a pvalue of 0.965.

That is:

]1 - \frac{\alpha}{2} = 0.965

\frac{\alpha}{2} = 0.035

\alpha = 2*0.035

\alpha = 0.07

Finally

1 - \alpha = 1 - 0.07 = 0.93

The interval is constructed at 93% confidence.

3 0
2 years ago
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