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3 years ago

What would the answer to this question be? A. 40° B. 60° C. 80° D. 100°

Mathematics

2 answers:

Alex777 [14]3 years ago

8 0

Answer:

D. 100°

Step-by-step explanation:

A straight line is 180°. Add 50° and 30° (which is 80°) and subtract the total from 180°.

50 + 30 = 80

180 - 80 = 100

vichka [17]3 years ago

5 0

Answer:

These angles form a straight line, so they are supplementary angles.

We know that, supplementary angles form 180°.

$50 + x + 30 = 180 \\ 50 + 30 + x = 180 \\ 80 + x = 180 \\ x = 180 - 80 \\ x = 100$

=> So, the missing angles is <u>100°</u>

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