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oee [108]
4 years ago
11

Jacklynn wondered how much of the moon covers if half of the moon is shaded. She learned in Science Class that the moon has radi

us of roughly 1,000 miles. How much area of the moon is seen if only half is clear to view?
Mathematics
1 answer:
Lesechka [4]4 years ago
8 0

Answer:

6.3 × 10⁶ square miles

Step-by-step explanation:

We are given,

The radius of the moon is approximately 1000 miles.

We know that the moon resembles a sphere and also,

Area of sphere = 4\pi r^{2}, where r is the radius.

Now, the area of the moon = 4\pi 1000^{2} = 1.26 × 10⁷ square miles

Since, only the half of the area is clear to view.

So, the area left to view = \frac{1.26\times 10^7}{2} = 6.3 × 10⁶ square miles.

Hence, the area of the moon in view is 6.3 × 10⁶ square miles.

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what is equivalent to 10x - (5x -1)

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Complete the statement by filling in the blanks: When constructing a confidence interval, if the level of confidence increases,
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\hat p \pm z_{\alpha/2} SE_{\hat p}

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Step-by-step explanation:

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A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

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Let's assume that we have a parameter of interest p and we want to estimate the value of p with \hat p and in general the confidence interval if the distribution of p is normal is given by:

\hat p \pm z_{\alpha/2} SE_{\hat p}

And for this case the margin of error would be:

ME= z_{\alpha/2} SE_{\hat p}

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