What is the value of x? (5 points) Select one: a. 20 b. 40 c. 45 d. 85

Answer:
x is equal to 40
Step-by-step explanation:
Since the two angles together equal 90, we can add them together and solve for x.
10 + 2x = 90
2x = 80
x = 40
x = 40
The angle is a right angle, which = 90 degrees.
2 x 40 = 80
80 + 10 = 90