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

Ondrej Sotolar asked May 6, 2022

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Ondrej Sotolar asked May 6, 2022

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17 votes

Answer:

a = 10

Explanation:

Supplementary angles sum to 180° , so

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

3a = 30 ( divide both sides by 3 )

a = 10

Bhiefer answered May 11, 2022

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