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Find the measure of angle A. A 7x-1 12x 489

Find the measure of angle A. A 7x-1 12x 489
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20 votes
Find the measure of angle A.
A
7x-1
12x
489

Find the measure of angle A. A 7x-1 12x 489-example-1
User Jkettmann
by
7.5k points

1 Answer

9 votes

Answer:

48 degrees

Explanation:

7X-1+12x+48=180

19x+47=180

19x=133

x=7

7(7)-1=A

49-1=A

48=A

A is 48 degrees

User Jzqa
by
8.2k points
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