Answer:
The total area of the surface of a three-dimensional object. Example: the surface area of a cube is the area of all 6 faces added together.
I have placed it correct answers in the image above
x = -2
Step-by-step explanation:
10x+8=3x-6
subtract 10x-3x
7x+8= -6
subtract -6-8
7x=-14
divide 7 into -14
Hope this helps!
No, because 3 x 7 = 21 - 4 = 17
the first one
