Answer:
20 believe me i got it right if not srry
Step-by-step explanation:
Answer:

Step-by-step explanation:
The area of a rectangle formula is length times width.
The length of this rectangle is
, and the width of this rectangle is 
Thus, the area of the rectangle is
. This can be expanded using FOIL.
First 
Outer 
Inner 
Last 
The two x terms combine, making 8x, and the answer is 
By combining like terms, the answer is a
<u>Given</u>:
The measures of the alternate exterior angles are (180 - x)° and x°
We need to determine the value x that makes m ║ n
<u>Value of x:</u>
We know that the measures of alternate exterior angles are equal.
Thus, we have;

Adding both sides of the equation by x, we have;

Simplifying, we get;

Dividing both sides of the equation by 2, we have;

Thus, the value of x is 90.
Hence, the value x = 90 makes the alternate exterior angles congruent and hence the line m is parallel to n.
480 because I caculated it hehe