Answer:
Answer D is correct
Explanation:
Given that,
<R = 3x + 4
<T = 4x - 10
<S =?
We know that the sum of the interior angles in a triangle is added up to 180°.
So,
<R + <T + <S = 180
3x + 4 + 4x - 10 + <S = 180
7x - 6 + <S = 180
<S = 180 + 6 - 7x
<S = 186 - 7x
<S = ( 186 - 7x )°