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Lana71 [14]
3 years ago
5

If two angles 2x+10°and 3x+20°are supplementary find x ​

Mathematics
1 answer:
valkas [14]3 years ago
7 0

Answer:

x = 30

Step-by-step explanation:

Supplementary angles sum to 180° , then

2x + 10 + 3x + 20 = 180 , that is

5x + 30 = 180 ( subtract 30 from both sides )

5x = 150 ( divide both sides by 5 )

x = 30

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