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Lostsunrise [7]
3 years ago
8

980\35??????help please lol I know this is easy

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
6 0

Answer:

28

Step-by-step explanation:

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If the length of FG is 6 units, what is the length of EH?
QveST [7]

FG goes through the center of the circle, so FG is diameter.

d = 2r \\ r =  \dfrac{d}{2}  \\  \\ r =  \dfrac{6}{2}  = 3

EH=r=3

Answer: EH=3

4 0
3 years ago
Out of 100 people sampled, 42 had kids. Based on this, construct a 99% confidence interval for the true population proportion of
maksim [4K]

Answer:

The 99% confidence interval for the true population proportion of people with kids is (0.293, 0.547).

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 z-score that has a p-value of 1 - \frac{\alpha}{2}.

Out of 100 people sampled, 42 had kids.

This means that n = 100, \pi = \frac{42}{100} = 0.42

99% confidence level

So \alpha = 0.01, z is the value of Z that has a p-value of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.  

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 - 2.575\sqrt{\frac{0.42*0.58}{100}} = 0.293

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.42 + 2.575\sqrt{\frac{0.42*0.58}{100}} = 0.547

The 99% confidence interval for the true population proportion of people with kids is (0.293, 0.547).

7 0
3 years ago
On a scale drawing 7 inches represents 10 miles. How much inches would represents 60 miles
Sergeeva-Olga [200]

Answer:

3.802e+6 miles

Step-by-step explanation:

mark me brainlist

4 0
3 years ago
This is past due, need help fast
Anika [276]

Answer:

Step-by-step explanation: 1 foot= 12 inches

so length 5.5 inches= 0.458 feet or 5.5/12

width 4 inches= 0.33 feet or 4/12

area 4x5.5= 1.833 feet or 22/12

8 0
3 years ago
You can trim the grass using a lawnmower at a rate of 80 square feet per minute. You can use a string trimmer at a rate of 20 sq
docker41 [41]
So first its 20 x 20 which is 400 so then the lawnmower does 80 per min so 80 x 5 and u get 400

5 0
3 years ago
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