Question

Are the following pairs of angles supplementary?
2x + 65° and 115° -2x

Answer 1

Answer:

No the following pairs of angles are not supplementary angles..

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Answer 2

Answer:

Yes

Step-by-step explanation:

If the angles are supplementry then (2x + 65) + (115 - 2x) should be equal to 180

so calculate

(2x + 65) + (115 - 2x) = 180

2x + 65 + 115 - 2x (brackets opened)

65 + 115 = 180 (+2x cancels out -2x)