I would say the answer is B. 8 1/2 because 11/20 is close to 10/20 which would be the same as 1/2
For a given function f(x) we define the domain restrictions as values of x that we can not use in our function. Also, for a function f(x) we define the inverse g(x) as a function such that:
g(f(x)) = x = f(g(x))
<u>The restriction is:</u>
x ≠ 4
<u>The inverse is:</u>

Here our function is:

We know that we can not divide by zero, so the only restriction in this function will be the one that makes the denominator equal to zero.
(x - 4)^2 = 0
x - 4 = 0
x = 4
So the only value of x that we need to remove from the domain is x = 4.
To find the inverse we try with the general form:

Evaluating this in our function we get:

Remember that the thing above must be equal to x, so we get:

From the two above equations we find:
b = 11
a = 4
Thus the inverse equation is:

If you want to learn more, you can read:
brainly.com/question/10300045
Answer:
The length of its side is 30 cm
Step-by-step explanation:
<h3><u>Given</u><u>:</u></h3>
An equilateral triangle with the perimeter of 90cm.
In a Equilateral Triangle all sides are equal
i.e., all 3 sides are equal
Now,
90/3 = 30 cm
Thus, The length of its side is 30 cm
<u>-TheUnknownScientist</u><u> 72</u>