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Aleksandr [31]
3 years ago
10

I NEED HELPPPP!!! If the volume of the pyramid is 12 cubic in. what is the height of the pyramid in inches

Mathematics
1 answer:
o-na [289]3 years ago
6 0
I think the answer is C sorry I’m I’m wrong
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24 Cubic Meters times 4= The Answer. I THINK!!
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3 years ago
Sarah polled 40 randomly selected students at her high school and found that 20% ( = 0.2) are happy with the quality of the cafe
Anna71 [15]
Given:
n = 40, sample size
Confidence level = 99% => z* = 2.58
\hat{p} = 20\%=0.2, sample proportion.

By definition, the margin of error is
z^{*} \sqrt{ \frac{\hat{p}(1-\hat{p})}{n} } = 2.58 \sqrt{ \frac{(0.2)(0.8)}{40} }= 0.1632

Answer:
According to Sarah's poll, she can conclude with 99% confidence level that 20% of the high school population is happy with the quality of the cafeteria food, with a margin of error of +/- 16.3%.

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Step-by-step explanation:

You need to find the individual price for each card in the packet. So first lets do 16 cards for $12.20, you divide $12.20 by 16 to get the price of one card. 12.2/16=0.7625, or about $0.76. Next we do $10.90 divided by 14, 10.9/14=0.7785, or about $0.78, which means 16 cards for $12.20 is the better buy!

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What information does the diagram add to help you
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Step-by-step explanation:

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