Answer:
m∠m = 43°
Explanation:
If we know BD is parallel to AC, then ∠BAC must also be a right angle, like we know from ∠DBA. A right angle is 90°.
∠BAC = 90° and it is made of ∠m and ∠p
∠BAC = m + p
Since we know p is 47 we can find m.
∠BAC = m + p
90° = m + 47°
m = 43°
m∠m = 43°
This property is called complementary angles because they add to 90°.