6. Solve for x in the figure below.

Answer:
x = 12
Step-by-step explanation:
The angle 3x + 4 and 50 form a right angle, thus
3x + 4 + 50 = 90, that is
3x + 54 = 90 ( subtract 54 from both sides )
3x = 36 ( divide both sides by 3 )
x = 12