Y=5-2x
x^2 + (5-2x)^2 = 25
x^2 + 25-20x+4x^2 = 25
x^2 +4x^2-20x+25=25
5x^2 -20x=0
x=0 and y=5
First, subtract 2/3 from both sides and you get

Then multiply both sides by 6/5 and you get
answer : the BC is measure by 4, and also if you wanna add this the AB is measure by 3.
Step-by-step explanation:
P=15.5 would be the answer