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Lorico [155]
2 years ago
11

Marley bakes a rectangular cake that is 20 inches wide, 12 inches long and 6 inches high. She removes the cake from the pan to f

rost it. How many square inches of frosting does she need?
Mathematics
1 answer:
sesenic [268]2 years ago
4 0
We know that
surface area of rectangular cake=area of the base+perimeter of base*height 

<span>only the top area is considered for frosting</span>

area of the base=20*12----> 240 in²

perimeter of the base=2*[20+12]----> 64 in
height=6 in

surface area of rectangular cake=240+64*6----> 624 in²

the answer is
624 in² 

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NASA is conducting an experiment to find out the fraction of people who black out at G forces greater than 6. In an earlier stud
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Answer:

The large sample n = 190.44≅190

The  large  sample would be required in order to estimate the fraction of people who black out at 6 or more Gs at the 85% confidence level with an error of at most 0.04 is n = 190.44

<u>Step-by-step explanation</u>:

Given  population proportion was estimated to be 0.3

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Given maximum of error E = 0.04

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The 85% confidence level z_{\alpha } = 1.44

\sqrt{n} = \frac{Z_{\alpha } \sqrt{p(1-p)} }{m.E}

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6 0
1 year ago
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