2 years ago

What is fifteen more than the quotient of 24 and a number x written as a expression?

Mathematics

1 answer:

bija089 [108]2 years ago

3 0

x=3

Step-by-step explanation:

24/x =x+15

24-15=x^2

x=3

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Read 2 more answers

a certain colony of bacteria doubles in size every 5 minutes if the colony began with two organisms how many will there be after

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Answer:

There will be 128 organisms after 30 minutes.

Step-by-step explanation:

30/5=6

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3 years ago

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Step-by-step explanation:

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3 years ago

Given the function f(x) = 3 (x - 9) + 6 which of the following represents f-1 (x)?

igomit [66]

Answer:

$f^{-1}$ (x) = $\frac{1}{3}$ x + 7

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 3(x - 9) + 6 ← distribute and simplify right side

y = 3x - 27 + 6 = 3x - 21 ( add 21 to both sides )

y + 21 = 3x ( divide all terms by 3 )

$\frac{1}{3}$ y + 7 = x

Change y back into terms of x with x = $f^{-1}$ (x) , thus

$f^{-1}$ (x) = $\frac{1}{3}$ x + 7

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