Question

TRIANGLE HELP TRIANGLE HELP

Answer 1

50+x=2x-15

Answer 2

x=65

Answer 3

then 2x-15=65*2-15=115

Answer 4

answer is c

Answer 5

There is a thorem about triangles that is useful here.
The measure of an exterior angle of a triangle is equal to the sum of the measures of its remote interior angles.
In this triangle, for the exterior angle of measure 2x - 15, its remote interior angles are the angles measuring 50 and x.
Using the thoerm, you can set up an equation. Then solve the equation for x.