Answer:
x = 50
Explanation:
From the diagram, we know that angle (x + 10)° and angle 30° are complementary angles (they add up to 90°). From this information, we can create the following equation.
(x + 10)° + 30° = 90°
x° + 10° = 90° - 30°
x° = 60° - 10°
x° = 50°
x = 50