Mathematics please help

Answer:
C
Step-by-step explanation:
Since the triangles are congruent then corresponding angles are congruent.
Thus
∠ M = ∠ P, that is
5x - 19 = 3x + 20.4 ( subtract 3x from both sides )
2x - 19 = 20.4 ( add 19 to both sides )
2x = 39.4 ( divide both sides by 2 )
x = 19.7
Thus
∠ P = 3x + 20.4 = 3(19.7) + 20.4 = 59.1 + 20.4 = 79.5° → C
The required ∠P = 79.5° Option C
Step-by-step explanation:
Given,
ΔMNO ≅ Δ PQR
∠Q = 3X+6°, ∠P = 3x+20.4°, ∠O = 2X-4° and ∠M = 5x-19°
To find out the value of ∠P
Since, ΔMNO ≅ Δ PQR
∠N = ∠Q and ∠O = ∠R and ∠M = ∠P
So,
3x+20.4° = 5x-19°
or, 5x -3x = 20.4°+19°
or, 2x = 39.4°
or, x = 19.7°
Hence,
∠P = 3×19.7°+20.4° = 79.5°