duqueaxel10 duqueaxel10

17-02-2022
Mathematics

contestada

m∠ABD=87°
m∠ABC=9x−1°
m∠CBD=6x+58

Encuentra m∠ABC

mABD87 mABC9x1 mCBD6x58 Encuentra mABC class=

Respuesta :

17-02-2022

Answer: 9x - 1 = 9(2) - 1 = 17

Step-by-step explanation:

m∠ABD = m∠ABC + m∠CBD

87 = 9x -1 + 6x + 58

87 = 15x + 57

30 = 15x

2 = x

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