Answer:
x = 6
Step-by-step explanation:
The median is half the sum of the parallel bases , then
[tex]\frac{2x+4+10x-50}{2}[/tex] = 13 ( multiply both sides by 2 to clear the fraction )
12x - 46 = 26 ( add 46 to both sides )
12x = 72 ( divide both sides by 12 )
x = 6
