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jek_recluse [69]
2 years ago
11

I need help with this

Mathematics
1 answer:
Leno4ka [110]2 years ago
6 0

Answer:

756pi  unit^3.

Step-by-step explanation:

This is the sum of the volume of 3 spheres

V of a sphere = 4/3 pi r^3, so we have:

4/3 pi 2^3 + 4/3 pi 6^3 + 4/3 pi 7^3

= 4/3pi (2^3 + 6^3 + 7^3)

= 756pi.

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At the beginning of an environmental study, a forest covered an area of 1500km^2. Since then, the area has decreased by 6.3% eac
geniusboy [140]

The <em><u>correct answer</u></em> is:

y=1500(0.937)^t

Explanation:

An exponential function is of the form

y=a\times b^x, where a is the initial population, b is 1 plus the amount of yearly change, and x is the number of years.

For our problem, a, the initial population, is 1500.

The yearly change is 6.3%; 6.3% = 6.3/100 = 0.063.  Since it is decreasing, this is negative; 1+(-0.063) = 0.937.

We use t as the number of years.

This gives us

y=1500(0.937)^t

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3 years ago
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MAVERICK [17]

Answer:

1.25

Step-by-step explanation:

type in your calculator:

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you should get the same answer

6 0
2 years ago
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Answer:

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Step-by-step explanation:

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Hello There!

Call the missing value 'n'
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Hope This Helps You!
Good Luck :)

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