Answer:
see explanation
Step-by-step explanation:
Since ∠MNP is right, then
∠MNQ + ∠QNP = ∠MNP ← substitute values
3x - 13 + 58 = 90, that is
3x + 45 = 90 ( subtract 45 from both sides )
3x = 45 ( divide both sides by 3 )
x = 15
Hence
∠MNQ = 3x - 13 = (3 × 15) - 13 = 45 - 13 = 32°
