Question

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

Answer 1

`1) 3x+45=90`

`3x=90-45`

`3x=45`

`(3x)/(3) =(45)/(3)`

`x=15`

1) The angles are complementary

`--------`

`2)x-20+x=90\\`

`2x=90+20`

`2x=110`

`x=55`

2) The angles are complementary

`--------`

`3)2x+(3x+25)=180`

`2x+3x+25=180`

`2x+3x=180-25`

`5x=155`

`x=(155)/(5)`

`x=31`

3) The angles are supplementary

`----------`

hope it helps..

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