Notice that

, so

Then taking the positive square root gives

so
and
.
A is the answer :)
Since we are given z = 8, finding y is simple.
By replacing the z in y + z = 11, we can see that y = 3
After finding these two, x can be found
Answer:
Perimeter of rectangle:
Step-by-step explanation:
We are given the following in the question:
Length of rectangle:

Width of rectangle:

Perimeter of rectangle:

Expressions to calculate perimeter

The attached image shows the image of the rectangle.
UMMMMMMMMMMMMMMMMMMMMMMMMM
Answer:
6+15x
Step by step explanation:
Expansion