JaiannaO698384 JaiannaO698384

27-10-2022
Mathematics

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a. Find the value of a. b. Find the value of the marked angles.A. 21; 137B. 20; 131C. 17; 113D. 18; 119

a Find the value of a b Find the value of the marked anglesA 21 137B 20 131C 17 113D 18 119 class=

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RoseabellaG239114 RoseabellaG239114

27-10-2022

Both are vertical angles (opposite)

So, they are congruent ( equal)

6a +11 = 2a+83

Solve for a:

6a -2a = 83-11

4a= 72

a= 72/4

a= 18

Value of the angles:

6a+11 = 6(18)+11 = 108+11 = 119°

2a+83 = 2(18)+83 =

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