The answer is 3 and one third!
20/4=5
(5*2)/3= 3 1/3
I find it easiest to match them up if I write them on top of each other.
R S T
T X Y
R matches to T
S matches to X
T matches to Y
⇒ STR matches to XYT
Answer: A
2(5x - y = 17)
10x - 2y = 34
6x + 2y = 14
16 x = 48
x = 3
5(3) - y = 17
15 - y = 17
-y = 2
y = - 2
( 3 , -2)
48.50/766 = .06331593
That is the percent, round it off to however many integers you want.
So, The Circumference of a triangle is located in the center of a triangle. hope this helps :)