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faust18 [17]
3 years ago
11

NEED HELP QUICK!!! WILL RATE 5 STARS

Mathematics
2 answers:
GalinKa [24]3 years ago
8 0
All right angles will follow the pythagorean theorem which is
a^2 +b^2 =c^2
where c is always the longest side aka the hypothenuse

you can determine what side length KL is through the pythagorean theorem,
if it is equal to side length EF, then you can conclude that you have two congruent triangles through the SSS postulate (theorem?)

and thus meaning triangle EGF must also be a right triangle
Andreas93 [3]3 years ago
6 0
I think its number 3
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nignag [31]

For this problem, the confidence interval is the one we are looking for. Since the confidence level is not given, we assume that it is 95%.

 

The formula for the confidence interval is: mean ± t (α/2)(n-1) * s √1 + 1/n


Where:

<span>
</span>

α= 5%


α/2 = 2.5%


t 0.025, 19 = 2.093 (check t table)


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df = n – 1 = 20 – 1 = 19

So plugging in our values:


8.41 ± 2.093 * 0.77 √ 1 + 1/20


= 8.41 ± 2.093 * 0.77 (1.0247)


= 8.41 ± 2.093 * 0.789019


= 8.41 ± 1.65141676


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3 0
3 years ago
I need some help with this one question
monitta

Yo sup??

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Hope this helps

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