3x=12 inverse operation
1 answer:
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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
If is multiplied with a fraction less than 1, out of the given options
would be the answer.
Explanation:
- First, we need to determine what a fraction lesser than 1 is. If the numerator is lesser than the denominator, the fraction will be lesser than 1 whereas if the denominator is higher than the numerator is would equal more than 1.
- If
is multiplied with 1, we get the value
- The value of
is 1.5 and the value of 5 are both greater than 0.6. So the third and fourth options cannot be the answer. So
is the answer.