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Genrish500 [490]
3 years ago
7

Over what interval is the graph of f(x) = -(X + 8)2 – 1 decreasing?

Mathematics
2 answers:
zloy xaker [14]3 years ago
7 0
Can you add a picture
gtnhenbr [62]3 years ago
3 0

Answer:

can u add a pic?

Step-by-step explanation:

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Answer:

Ratio = \frac{R^2 - r^2 }{ r^2}

Step-by-step explanation:

Given

See attachment for circles

Required

Ratio of the outer sector to inner sector

The area of a sector is:

Area = \frac{\theta}{360}\pi r^2

For the inner circle

r \to radius

The sector of the inner circle has the following area

A_1 = \frac{\theta}{360}\pi r^2

For the whole circle

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The sector of the outer sector has the following area

A_2 = \frac{\theta}{360}\pi (R^2 - r^2)

So, the ratio of the outer sector to the inner sector is:

Ratio = A_2 : A_1

Ratio = \frac{\theta}{360}\pi (R^2 - r^2) : \frac{\theta}{360}\pi r^2

Cancel out common factor

Ratio = R^2 - r^2 : r^2

Express as fraction

Ratio = \frac{R^2 - r^2 }{ r^2}

6 0
3 years ago
Sue has taken four exams so far in her History course. Her scores are 84.0, 78.2, 93, and 87.5. What is the average of these sco
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Step-by-step explanation:

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3 years ago
A local charity is selling seats to a baseball game. Seats cost $20 each, and snacks cost an additional $5 each.
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7 0
3 years ago
Ghchdhdjfhfjfjfjfjfjdjdjdjf
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Step-by-step explanation:

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