Answer:
B 5
Step-by-step explanation:
6x + 60 = 90 (right angle)
6x = 30
x = 5
B. 5
We can see that the two angles sum to 90°
⇒ 6x° + 60° = 90°
Subtract 60° from both sides:
⇒ 6x° + 60° - 60° = 90° - 60°
⇒ 6x° = 30°
Divide both sides by 6:
⇒ 6x° ÷ 6 = 30° ÷ 6
⇒ x = 5
