Answer:
The choices were typed wrong, but we can find the inverse of each option.
For function 
the inverse is the same function 
, because an inverse of a function is where their composition gives the independent variable as unique result.
If we do that with each function, we have:
; where and , we have
So they are inverse.
For 
its inverse would be 
, because
For 
, its inverse is 
, because
For 
, its inverse is 
, because
There you have all inverses. Basically, if their composition results in 
, that means they are inverse.
Answer:
2/2 has a ratio equivalent to 1
3/6 has a ratio equivalent to 0.5
Step-by-step explanation:
Answer:
Step-by-step explanation:
First, let's change those variables to x and y, just for the sake of convenience. In order to find the inverse of a function algebraically, switch the x and y coordinates, then solve for the new y. Letting y = A(n) and x = n (we will switch them back when we're done):
y = 3x - 20. This is linear; a line with a slope of 3 and a y-intercept of -20. When we switch the x and the y, we get:
x = 3y - 20. Now we solve for the new y. Begin by adding 20 to both sides:
x + 20 = 3y. Now divide both sides by 3:
, or to write it in slope-intercept form, like the function you started with:
This is also a line, with a slope of 1/3 and a y-intercept of +20/3
Now, replacing:
That is how to write the inverse using function notation. The little -1 as an exponent tells us that this is the inverse of the function A(n).
60 slices in 5 cheesecakes. So 1 cheesecake has 12 slices. So 8 cheesecakes will have 96 slices
Answer:
The cosine of the angle is 4/5.
Step-by-step explanation:
An acute angle is between 0º and 90º, in the first quadrant of the trigonometric circle, in which both the sine and the cosine are positive values.
For each angle 
, we have that:
We have that:
So
The cosine of the angle is 4/5.
