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2 years ago

9

The inner core of Earth begins about 3200 miles below the surface of Earth and has a volume of about 581,000,000 pi cubic miles.

Approximate the radius of Earth. Round your answer to the nearest whole number.

1 answer:

weqwewe [10]2 years ago

7 0

$r=3958. 13$ miles good luck in college a student from middle school

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Ilia_Sergeevich [38]

Answer:

2

Step-by-step explanation:

Given

See attachment for chart

Required

Number of off days

To do this, we simply calculate the expected value of the chart.

This is calculated as:

$E(x) = \sum x * f$

Where

x = days

f = chances

So, we have:

$E(x) = 0* 0.3 + 1 *0.2 + 2 * 0.25 + 3 * 0.2 + 4 * 0.02 + 5 * 0.01 + 6 * 0.01 + 7 * 0.01$

$E(x) = 1.56$

$E(x) \approx 2$

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Stels [109]

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Kcf method:
6/10*7/12= 42/120
42/120 in simplest form will be 7/20
So the answer is A

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bonufazy [111]

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