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Virty [35]
3 years ago
13

Find x in the figure below: x=9 x=7 x=8 x=6

Mathematics
1 answer:
nadya68 [22]3 years ago
6 0
You take 4x +9x and you get 13x then you take 13 +3 and you get 16 so you have the equation 13x+16=120. then you subtract 16 from both sides and you end up with 13x=104 then divide 104 by 13 and you get x=8
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Answer:

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Step-by-step explanation:

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Answer:

The margin of error E that corresponds to a 95% confidence level is: E=0.03297

Step-by-step explanation:

The propocion is p = 0.45

The sample size n = 875

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Level of significance = 1-level of confidence

Level of significance = 1-0.95 = 0.05

The formula for the error is:

E = Z_{\alpha/2}\sqrt{\frac{p(1-p)}{n}}

The value for Z_{0.05/2} =Z_{0.0250}= 1.96 according to the normal table

So:

E = 1.96\sqrt{\frac{0.45(1-0.45)}{875}}\\\\SE=0.03297

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Step-by-step explanation:

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Step-by-step explanation:

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