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Zinaida [17]
1 year ago
8

Three times my age in 5 years is 54. How old am i now.

Mathematics
2 answers:
Romashka [77]1 year ago
8 0

Answer:

D. 13

Step-by-step explanation:

54 ÷ 3 = 18 (your age in 5 years)

18 - 5 = 13 (your age now)

Alex Ar [27]1 year ago
5 0
13

54/3=18
18-5=13

This is correct
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Answer:

The 95% confidence interval for the average heights of the population is between 1.7108m and 1.7892m.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

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The upper end of the interval is the mean added to M. So it is 1.75 + 0.0392 = 1.7892m

The 95% confidence interval for the average heights of the population is between 1.7108m and 1.7892m.

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3 years ago
A researcher wants to know if there is a relationship between the number of shopping centers in a state and the retail sales (in
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Answer:

Kindly check explanation

Step-by-step explanation:

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The regression equation obtained using the online regression calculator is :

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3.)

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4.)

About 98%  of variation in number of sales is explained by the regression line

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Correlation Coefficient = 0.9911

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The students in Mr. Rivera's art class are designing a stained-glass window to hang in the school entryway. The window will be4
Studentka2010 [4]
40 square feet, since 4x10 is equal to 40.
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3 years ago
2 ft<br> 6 ft<br> 14 ft<br> Volume =
sleet_krkn [62]

Answer:

volume of given figure is

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