Answer:
4
Step-by-step explanation:
2(10 -6x)=x -8x
20 - 12x = x - 8x
20 = x - 8x + 12x
20 = 5x
20 / 5 = x
x = 4
<h2>
Answer:</h2>

<h2>
Step-by-step explanation:</h2>
A prism is a solid object having two identical bases, hence the same cross section along the length. Prism are called after the name of their base. On the other hand, a rectangular prism is a solid whose base is a rectangle. Multiplying the three dimensions of a rectangular prism: length, width and height, gives us the volume of a prism:

From the statement of the problem we know:

So:

Since we can't have negative distance, the only valid option is 
Answer:
126.5
Step-by-step explanation:
Divide the shape into two, so you have a triangle and a rectangle.
Area of Rectangle:
A = bh
= (11)(8)
= 88
Area of Triangle:
A = 1/2bh
= 1/2(11)(7)
= 38.5
Add the two areas and the answer is 126.5