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Advocard [28]
3 years ago
5

Find the midpoint of the line segment with the given endpoints(3, -5) and (7,9)

Mathematics
1 answer:
erastovalidia [21]3 years ago
8 0

Answer:

Step-by-step explanation:

(x₁ , y₁) = (3 , -5)    & (x₂, y₂) = (7 , 9)

Midpoint = (\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2})

               =(\frac{3+7}{2} , \frac{-5+9}{2})\\\\=(\frac{10}{2} , \frac{4}{2})\\\\=(5 , 2)

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Answer: (30.49 years, 42.31 years)

Step-by-step explanation:

The formula to find the confidence interval is given by :-

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}.

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\sigma = Population standard deviation.

n= Sample size.

As per given , we have

\overline{x}=36.4

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A 99 percent confidence interval for µ, the true mean age of guests will be :

36.4\pm (2.576)\dfrac{14.5}{\sqrt{40}}\\\\ 36.4\pm (2.576)2.29265130362\\\\=36.4\pm5.90586975813\\\\\approx36.4\pm5.91\\\\=(36.4-5.91,\ 36.4+5.91)\\\\=(30.49,\ 42.31)

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3 years ago
What is 3n + 17 = 44??
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Answer:

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