peefart
peefart
29-10-2020
Mathematics
contestada
find the angle of X
Respuesta :
jonesjrroberte
jonesjrroberte
29-10-2020
77
All interior angles of a triangle add to 180, so:
42 + 61 + 3x +20 = 180
Combine and solve for x:
3x + 123 = 180
3x = 57
X = 19
Replace x in formula with 19:
3(19) + 20
57 + 20
77
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