X + x + 3(2+x)= 36
2x + 6 + 3x = 36
5x + 6 = 36
5x = 36 - 6
5x = 30
x = 6
Longer piece = 2 + 6 = 8inches
Answer:
Step-by-step explanation:
the answer stay the same due to the fact there are no like terms
7w+9+6x
Answer is 512 cu.ft.
Volume of a cube is length x width x height
So 8 x 8 x 8 = 512
Volume of a cube is a side length cubed
So 7*7*7
Answer is 343 centimeters