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LekaFEV [45]
1 year ago
3

F(x) = -x^2 + x + 13Find f(9)

Mathematics
1 answer:
Fittoniya [83]1 year ago
6 0

To answer this question, we need to substitute the value of 9 into the quadratic function as follows:

f(9)=-(9)^2+9+13=-81+22\Rightarrow f(9)=-59

Therefore, the answer is f(9) = -59.

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The perimeter of a rectangular school yard is 428 meters. It is 100 meters wide. How long is it?
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