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andre [41]
3 years ago
14

If 150° and 3a are supplementary angles, find the value of a. ​

Mathematics
1 answer:
zzz [600]3 years ago
5 0

Answer:

a = 10

Step-by-step explanation:

Supplementary angles sum to 180° , so

150 + 3a = 180 ( subtract 150 from both sides )

3a = 30 ( divide both sides by 3 )

a = 10

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