11: B
12: C
They are both supplementary angles meaning they add to 180 degrees
Answer:
Its 280
Step-by-step explanation:
I got it right on A P E X
The calculator gave me 1017.876. inches cubed, right?
The answer is no y varies 8 x varies 2
For this case we assume that the photo album is rectangular in shape and therefore the fabric too. By definition, the area of a rectangle is given by:

Where:
a: It is the length of the rectangle
b: It is the width of the rectangle
According to the problem data we have to:

Substituting:

We clear "a":

Thus, the length of the fabric is 
ANswer:
The length of the fabric is