Answer: x = 52 m
Step-by-step explanation:
The formula we will use, which solves for the area of a trapezoid, is
where a is a base, b is a base, and h is the height.
We will input the known values, then solve for <em>x</em>.

Subtract
from both sides.

Square and expand both sides.
9x+36=18x+72
Subtract 9x from both sides.
36=9x+72
Subtract 72 from both sides.
-36=9x
Divide both sides by 9.
-4=x
Your answer would be -4.
I hope this helps :)
I'm sorry ninth grade slow learner
Answer:
$6400
Step-by-step explanation:
4000x.05=200× 12=2400+4000=$6400