purpletulip48 purpletulip48
  • 26-02-2021
  • Mathematics
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What is the measure of angle A in the triangle?



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What is the measure of angle A in the triangle Enter your answer in the box class=

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lauralazda1
lauralazda1 lauralazda1
  • 26-02-2021
Angles in a triangle add up to 180 degrees.
(2x-10)+(x+30)+70=180
(2x-10)+(x+30)=110
3x+20=110
3x=90
x=30
so A:
2(30)-10
=50
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