Answer:
D. 3/19
Step-by-step explanation:
12/1 = 12
12/2 = 6
12/3 = 4
These are the only ones that make the equation true.
There are also only 19 numbers because they need to be less than 20 like the question indicated. Therefore, the answer is D.
Divide 9 from both sides.
The first step to solving this equation is to add 23 to both sides.
9x - 23 (+23) = 49 (+23)
9x = 49 + 23
9x = 72
The second step is to isolate the x and divide 9 from both sides:
(9x)/9 = (72)/9
x = 72/9
x = 8
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domain of f(x) is x ≤ 0; domain of f^-1(x) is x ≥ 4
The square root function will always give a positive value, so the opposite of the square root function will give non-≤positive values. That means ...
The domain of f(x) is x ≤ 0; the domain of f^-1(x) is x ≥ 4.
The answer is 115.2.
