Question

Angles a and b are supplementary angles. What is the value of m∠a if m∠b=43° ?(1 point)
Responses

137°
137 degrees

223°
223 degrees

47°
47 degrees

43°

Answer 1

Since supplementary angles add up to 180 degrees, if m∠b = 43°, then m∠a = 180° - 43° = 137°.
Therefore, the correct answer is 137°.