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GREYUIT [131]
2 years ago
10

A system of equations is shown.

Mathematics
1 answer:
olga55 [171]2 years ago
6 0

Answer:

a)Add the terms in the bottom equation to the terms in the top equation to eliminate y

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Which expression below gives the average rate of change of the function g(x)= -x^2 -4x on the interval 6 ≤ x ≤ 8?
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The average rate of change of a function, g(x), over an interval [a, b] is given by 

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Thus, the average rate of change of g(x)=-x^2-4x over the interval 6\leq x\leq8 is given by:

Average\ rate\ of\ change= \frac{[-(8)^2-4(8)]-[-(6)^2-4(6)]}{8-6} \\  \\ = \frac{(-64-32)-(-36-24)}{2} = \frac{-96-(-60)}{2} = \frac{-96+60}{2} = \frac{-36}{2}  \\  \\ -18
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