Question

Help? I'm pretty confuse on both of these? Please explain?

Answer 1

35 is the first answer (BAE ~ DAC)
36. We must divide 20 by 2 to get 10 because all the other sides are 2x the size. 3x-5=10   (Add 5) 3x=15 (Divide by 3) x=5 so the last answer choice is correct.