montse2889 montse2889

13-10-2020
Mathematics

contestada

m_ZBC =2x+8, m_ABC=21x-5,
and m ABZ=139° Find m ABC.
to
z
B

Respuesta :

mlarsen5000 mlarsen5000

13-10-2020

Answer:

163°

Step-by-step explanation:

Assuming that BZ is a ray inside angle ABC:

2x+8+139=21x-5

8+139+5=21x-2x

152=19x

8=x

m<ABC=21x-5=

21(8)-5=

168-5=

163

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