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Mumz [18]
3 years ago
12

The amounts below show the change (measured in feet) in water level over four months. What is the average monthly change in wate

r level?
3/4, -9/4, -11/4, 5/4
Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
5 0

Answer:

The average change in water level is: -3/4

Step-by-step explanation:

The average is calculated by adding up all the values and then dividing the sum by total number of values.

Given values are:

3/4, -9/4, -11/4, 5/4

The sum of values will be:

=\frac{3}{4}+(-\frac{9}{4})+(-\frac{11}{4})+\frac{5}{4}\\=\frac{3}{4}-\frac{9}{4}-\frac{11}{4}+\frac{5}{4}\\=\frac{3-9-11+5}{4}\\=\frac{-12}{4}\\=-3

Total number of values is 4

So,

Average = \frac{Sum}{Values}\\= \frac{-3}{4}

Hence,

The average change in water level is: -3/4

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That's a pentagon, which we can view as 10 right triangles with legs a and s/2 (half of s) and hypotenuse r.  So area of the pentagon is

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The area of the circle is πr² so the circle area is

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The white area is the difference, C-P, and the probability we seek is the fraction of the circle that's white, so (C-P)/C.

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Allushta [10]

Answer: it will trave 56.89 meters before coming to rest.

Step-by-step explanation:

This is a geometric progression since the distance travelled (height) by the ball is reducing by a constant ratio, r. Since the number of times that the ball will bounce is infinite, then we would apply the formula for determining the sum of the terms in a geometric progression to infinity which is expressed as

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3 years ago
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