How do you do percentages?
2 answers:
Okay I’ll give an example
Say you want to find the percent of 60/93, make another fraction of P/100 (you dot really need a letter, but we are using it as the percentage for a now) So first you’d multiply 60 by 100 wich is 6,000. Next you’d have to divide 6,000 by 93, wich would give you 64.5161. And that’ll be your answer! You only have to do 2 steps.
Say you want to find the percent of 60/93, make another fraction of P/100 (you dot really need a letter, but we are using it as the percentage for a now) So first you’d multiply 60 by 100 wich is 6,000. Next you’d have to divide 6,000 by 93, wich would give you 64.5161. And that’ll be your answer! You only have to do 2 steps.
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Answer:
(x) = √ x + 4
Step-by-step explanation:
step 1) replace f(x) with y
y = x² - 4
step 2) switch the x and y (because every (x, y) has a (y, x))
x = y² - 4
step 3) add 4 to both sides of the equal sign
x + 4 = y²
step 4) take the square root of both sides of the equal sign (the square root symbol cancels out the ²)
√ x + 4 = y
step 5) you know have the inverse of f(x) = x² - 4
(x) = √ x + 4