Answer:
7/10
Step-by-step explanation:
Answer:
5ab - 8a - 5b - 8
Step-by-step explanation:
each of these can be divided by 5
Answer:
the radius is 10 since 10 plus ten is 20
Answer: 
Step-by-step explanation:
The surface area of a rectangle can be calculated with:

The surface area of a trapezoid can be calculated with:

Calculate the area of the base, wich is a rectangle:

There are two equal rectangles, therefore, multiply the area of any of them by 2:

Calculate the area of the other rectangle:

There are two equal trapezoids, therefore, multiply the area of any of them by 2:

Therefore, the surface area will be the sum of all the areas calculated:

If 3 =

, then we know 9 =

because 9 is 3 squared.

can be simplified to

So now we know

=

·

Since

and

have the same base, we can express it as a single term by adding the exponents together.
So the answer is C)