Answer: x = 3
Step-by-step explanation:
I am assuming that x is the short side in the middle and not the two vertical longer sides based on the placement.
Since we are given the longer side and the three sides that make it up below it, we do not need to utilize the area here. See the attached image.
To find x, we will use the segment addition postulate and subtraction.
17 m - 7m - 7 m = x
3 = x
