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3 years ago

14

Find f(4) in the equation f(x) = 7x-9*

2 answers:

egoroff_w [7]3 years ago

7 0

Answer:

19

Step-by-step explanation:

Sav [38]3 years ago

3 0

The answer to this question is 19

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EXPERT HELP I'LL GIVE BRAINLIEST: EXPLAIN THE ANSWER

Katyanochek1 [597]

Answer:

C

Step-by-step explanation:

Hey There!

So the answer is C because essentially answer choice c is saying that you can predict what the amount of problems that the next kid would complete in 30 minutes because all of the samples have a mean of 15.6-15.9 or that all of the samples are reliable because all of the means are near each other

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Whats the answer and how do i get the answer myself

Mumz [18]

Answer:

$f^{-1} (x) = \frac{x}{3} - 3$

Step-by-step explanation:

Let here the given function f(x) = y

or, $x= f^{-1} (y)$

⇒ y = 3x+ 9

Now, solving for x, we get

3x+ 9 = y ⇒ 3x = y - 9

or, $x = \frac{y-9}{3} = \frac{y}{3} - \frac{9}{3}$

⇒ $x = ( \frac{y}{3}) - 3$

Now, substituting x and y

Hence, $f^{-1} (x) = \frac{x}{3} - 3$

3 0

3 years ago