Answer:
x = 4
Step-by-step explanation:
The mid segment is half the sum of the parallel bases, that is
[tex]\frac{1}{2}[/tex] (2x + 3x + 10) = 15 ( multiply both sides by 2 )
5x + 10 = 30 ( subtract 10 from both sides )
5x = 20 ( divide both sides by 5 )
x = 4
