xiopantoja30
xiopantoja30
13-05-2022
Mathematics
contestada
10 POINTS PLEASE HELP
Respuesta :
Аноним
Аноним
13-05-2022
Answer:
m∠A = 49°
Step-by-step explanation:
According to Angle Sum Property,
angles of the Δ add up to 180°
∠A + ∠B + ∠D = 180°
5x - 6 + 7x - 24 + 78 = 180
12x + 48 = 180
x + 4 = 15
x = 11
m∠A
5x - 6
5(11) - 6
55 - 6
49°
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