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3 years ago

12

A photograph measuring 2 inches by 3.6 inches is enlarged to increase the original 2-inch dimension to 5 inches. When this is do

ne, how long does the original 3.6-inch dimension become?

1 answer:

sleet_krkn [62]3 years ago

3 0

Answer:

9 inches

Step-by-step explanation:

2 x 2.5 = 5

3.6 x 2.5 = 9

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Answer: $f^{-1} (x)=x^{2} -7$

Step-by-step explanation:

To find the inverse of a function replace f(x) with x and the original x with y

$f(x)=\sqrt{x+7} \\x=\sqrt{y+7}$

Now we can solve for y

Square both sides so we can cancel out the root

$x=\sqrt{y+7}\\x^{2} =\sqrt{y+7}^{2} \\x^{2} =y+7$

Now subtract 7 from both sides

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Now replace y with the inverse of f(x), $f^{-1} (x)$

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G - (-31) = -7
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In short, Your Answer would be -38

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