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icang [17]
1 year ago
5

For the function: f(x) = 18 − x − x2 Find f(9)

Mathematics
1 answer:
Nana76 [90]1 year ago
4 0
F(9) = 18-9-(9)^2

=> f(9) = 18-91-81

=> f(9) = -153
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3 years ago
Braceleftzf y = 8/7 x − 2/3 <br> 8/3 x + y = 5/9
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Answer:

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Step-by-step explanation:

It is convenient to write the equations in standard form.

Multiplying the first equation by 21 gives ...

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Then the system of equations in standard form is ...

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Subtracting the first from the second, we get ...

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Substituting this into the second equation, we have ...

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The solution is (x, y) = (77/240, -3/10).

7 0
2 years ago
Solve for x: |x|-8=-5
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