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3 years ago

I need help, because I am stu-pid

Mathematics

2 answers:

Alborosie3 years ago

5 0

Answer:

The answer is 171

Step-by-step explanation:

You do the math in the parentheses first, then the sum to the power of two, then multiply by 4, and then subtract by 5^2.

4×(2+5)^2-5^2

4×(7^2)-5^2

4×(49)-5^2

4×49-5^2

196-5^2

196-25=

171

Vera_Pavlovna [14]3 years ago

3 0

Answer:

B. 171

Step-by-step explanation:

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3 years ago

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3 years ago

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The 95% confidence interval $81.852 < \mu < 280.098$

Step-by-step explanation:

From the question we are told that

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The standard deviation is $\sigma = 143.042$

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$\alpha =( 100- 95) \%$

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$Z_{\frac{\alpha }{2} } = 1.96$

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