9514 1404 393
Answer:
A. 12
Step-by-step explanation:
The midsegment is half the length of the base.
3x -8 = 2(x +2)
3x -8 = 2x +4 . . . . . eliminate parentheses
x = 12 . . . . . . . . . . . .add 8-2x to both sides
