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jolli1 [7]
3 years ago
13

Tell whether the angles are complementary or supplementary. Then find the value of x.

Mathematics
1 answer:
Paha777 [63]3 years ago
8 0
The angles are complementary meaning they =90 degrees.

So take (x-20) and x, and write this equation,

x-20+x=90

2x-20=90

move the 20 over

2x-20=90
    +20  +20

2x=110

x=55.

You can check it by plugging it back in,

(55-20)=35
and
x=55

35+55=90.

Thus, you know your answer is correct.
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