Amount of increase = 20-12 = 8
Percentage increase = 8/12 = 0.666... 66.666...% ≈ 67%
A=15 and the angles are 100 degrees. Thats because 6a=10=3a=55 due to alternate angles equal the same angle. so if you algebraically solve for a, you eventually get a=15. then plug in your a value into either or given equations. (i.e.. 6(15)+10= 100
Are those answer options or the side lengths? And where is the trapezoid?
The only possible answer is False