Find the length of st. st= 5x+2 and tv = 3x+12 you for anyone who does answer(:

I think you forgot to include that T is the midpoint of SV, but what this would mean is that ST = TV.
5x + 2 = 3x + 12

Subtract 2 from both sides.
5x = 3x + 10

Subtract 3x from both sides.
2x = 10

Divide both sides by 2.
x = 5

Now plug that x into ST.
ST = 5(5) + 2
ST = 25 + 2
ST = 27

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct