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lilavasa [31]
3 years ago
8

2. What is the area of a square computer screen with 21-in. sides? A. 220 sq. in. B. 42 sq. in. C. 441 sq. in. D. 84 sq. in

Mathematics
2 answers:
KatRina [158]3 years ago
6 0
The area of a square is l^2=A because the length and width are the same length. So this would be 21^2 or 21*21. Your answer will be 441in^2.
Daniel [21]3 years ago
3 0
THE ANSWER IS C: 441 SQ IN..............
GOOD LUCK
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Answer:

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Step-by-step explanation:

<u><em>Step(i):-</em></u>

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<u><em>Step(ii):-</em></u>

The Marginal error is determined by

M.E = \frac{Z_{0.05} \sqrt{p(1-p)}  }{\sqrt{n} }

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Cross multiplication , we get

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√n = \frac{2 X0.4330}{0.08} = 10.825

squaring on both sides , we get

n = 117.07

<u><em>Final answer:-</em></u>

<em>The large  sample n = 117.07</em>

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2 years ago
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lorasvet [3.4K]

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Step-by-step explanation:

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