camrynsway20 camrynsway20

05-11-2020
Mathematics

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find the value of a.B.find the value of the marked angles

find the value of aBfind the value of the marked angles class=

Respuesta :

seetha1980 seetha1980

05-11-2020

Answer:

a. 18 b. 119°, 118°

Step-by-step explanation:

a. Given angles are vertical, so they are equal.

6a+11 = 2a+83

6a-2a = 83-11

4a = 72

a = 72/4

a = 18

b. Substituting the value of a in the given angles,

6a+11 = 6*18+11 = 108+11 = 119°

2a+83 = 2*18+83 = 36+83 = 118°

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