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5 votes
I need help on that, please and thank you.​

I need help on that, please and thank you.​-example-1

2 Answers

5 votes

Answer:

X = 180 - (31 + 40)

Explanation:

X + 31° + 40° = 180° { angle on a straight line is 180°}

Collecting like terms

X = 180° - 31° - 40°

X = 180° - (31° + 40°)

X = 180° - 71°

X = 109°

User GrapeBaBa
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3 votes
it’s number three. have a good day. :)
User Remco Te Wierik
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