Question

In AVWX, m_V = (5x + 7)º, m_W = (4x + 16), and m_X = (5x + 17).
What is the value of ?

Answer 1

x=10°

Explanation:

(5x+7)°+(4x+16)°+(5x+17)°=180° (a triangle contains 180°)

5x+7+4x+16+5x+17=180

14x+40=180

14x=180-40

14x=140

x=140/14

x=10

x=10°

note:to avoid writing ° always. I made it implicit.