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Vesna [10]
3 years ago
10

“B” equals what in degrees? Explain pls

Mathematics
2 answers:
spin [16.1K]3 years ago
8 0

Answer:

b =51

Step-by-step explanation:

A straight line is 180 degrees

The three angles add to 180 degrees

90+39+b = 180

Combine like terms

129+b+180

Subtract 129 from each side

129+b-129 = 180-129

b =51

nlexa [21]3 years ago
5 0

Answer:

b =5 1 \:  \:  \: degrees \\

Step-by-step explanation:

Angles in a straight line =180 degrees

90 + 39 + b = 180 \\12 9 + b = 180 \\ b = 180 - 129 \\ b =5 1 \:  \:  \: degrees

hope this helps

brainliest appreciated

good luck! have a nice day!

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