3 years ago

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

mr_godi [17]3 years ago

8 0

Answer:

The first one

Step-by-step explanation:

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(27x 5 + 9x 4 - 18x 3) 9x 2 what is the answer

ioda

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kupik [55]

Answer:

B. f -1(x) = x + 2 / 5

$f^{-1}(x)=\frac{x+2}{5}$

Step-by-step explanation:

To find the inverse of a function we need to interchange x and y an solve for y.

Since $f(x)=y$ , then

$f(x)=5x-2$

$y=5x-2$

$x=5y-2$

Add 2 to both sides

$x+2=5y-2+2$

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Divide both sides by 5

$\frac{x+2}{5}=\frac{5y}{5}$

$\frac{x+2}{5}=y$

$y=\frac{x+2}{5}$

$f^{-1}(x)=\frac{x+2}{5}$

We can conclude that the correct answer is B. f -1(x) = x + 2 / 5

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3 years ago

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