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Andru [333]
2 years ago
11

Find the area of this circle. Use 3.14 to approximate Pi

Mathematics
1 answer:
bekas [8.4K]2 years ago
6 0

\pi {r}^{2} \\  \:  \:  \:  \:  \:  \:  = 3.14 \times 13 {cm}^{2}  \\  = 530.66 {cm}^{2}

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A poll was conducted by a home mortgage company regarding home ownership in the United States. The company polled 1,488 American
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If the sample size is 1488 and confidence interval of 99% then the margin of error is 0.03088.

Given sample size of 1488, percentage of those polled own a home be 69% and confidence level be 99%.

We are required to find the approximate margin of error.

Margin of error is the difference between calculated values and real values.

n=1488

p=0.69

Margin of error=z*\sqrt{p(1-p)/n}

Z score when confidence level is 99%=2.576.

Margin of error=2.576*\sqrt{0.69(1-0.69)/1488}

=2.576*\sqrt{(0.69*0.31)/1488}

=2.576*\sqrt{0.2139/1488}

=2.576*\sqrt{0.0001437}

=2.576*0.01198

=0.03088

Hence if the sample size is 1488 and confidence interval of 99% then the margin of error is 0.03088.

Learn more about margin of error at brainly.com/question/10218601

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3 0
2 years ago
Plane tickets to Chicago usually cost $120. On a travel deal website, you scored a coupon for 35% off. Your budget for the trip
enot [183]

Answer: yes it’s 78$

Step-by-step explanation: The difference is 42.00

4 0
2 years ago
FIRST CORRECT ANSWER WILL GET BRAINLIEST
mezya [45]

Answer:

They are parallel.

Step-by-step explanation:

They have the same slope, 7, and different y-intercepts, 4, -1/4, so they are parallel.

5 0
2 years ago
I just got back from winter break for my school and I already forgot everything INCLUDING the seriously easy things ;)
Natasha_Volkova [10]

Answer:

112cm

Step-by-step explanation:

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8×2=16

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8+16+32= 56×2= 112cm

Hope this helps!

7 0
3 years ago
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I need help with this pleaseee!!
soldi70 [24.7K]
A. No
B. No
C. Yes(probably)
D. Yes
(Sorry if these are wrong :’) good luck!)
3 0
3 years ago
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