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Angle A and angle B are supplementary. If
m2A = (16x – 7º and m2B = (21x + 2)", what
is the measure of angle A in degrees?
a 107
b. 37°
c. 5°
d. 73

Respuesta :

Answer:

d

Step-by-step explanation:

Supplementary angles sum to 180°

Sum the angles A and B and equate to 180m that is

16x - 7 + 21x + 2 = 180

37x - 5 = 180 ( add 5 to both sides )

37x = 185 ( divide both sides by 37 )

x = 5

Thus

∠ A = 16x - 7 = 16(5) - 7 = 80 - 7 = 73° → d

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