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Mrac [35]
3 years ago
8

What is the supplementary angle of 128.7 degrees

Mathematics
1 answer:
Leno4ka [110]3 years ago
4 0
Supplementary angles add to 180 so x + 128.7 = 180 subtract 128.7 from both sides; therefore, the answer is 51.3

I hope this helps!

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