A figure displays two nonadjacent angles with measures 3x° and (4x+1)° . If the angles are complementary, what is the simplified equation corresponding to the measures of the angles?
A. (7x+1)=90°
B. (7x+1)=180°
C. (1x+1)=90°
D. (1x+1)=180°
If two angles are complementary, their measures add up to 90°.
So, the equation corresponding to the measures of the angles is 3x° + (4x+1)° = 90°.
Simplifying this equation, we get 7x + 1 = 90.
Therefore, the correct answer is A. (7x+1)=90°.