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dezoksy [38]
3 years ago
8

Answer this question pls? Its 20 pts

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
6 0

Answer:

B   a = 180 -77-60

Step-by-step explanation:

The angles add to 180 degrees since they form a straight line

77+ 60+a = 180

a = 180 -77-60

MArishka [77]3 years ago
4 0

The answer is B.

Step-by-step explanation:

We know that the sum of angles in a straight line = 180°

Therefore:

77° + 60° + a = 180°

a = 180° - 77° - 60°

Hence, option B is the answer.

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Step-by-step explanation:

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