viennadona2009 viennadona2009

01-02-2022
Mathematics

contestada

ZA and B are supplementary angles. If m_A = (x – 18)° and m
ZB = (x – 20°, then find the measure of ZB.

Respuesta :

saharamagar2020 saharamagar2020

01-02-2022

Answer:

Step-by-step explanation:

x-18+x-20=180(being supplementary angle)

or,2x-38=180

or,2x=180+38

or,2x=218

or,x=218/2

x=109

now,

ZB=x-20

=109-20

=89

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