Question

If the measures of a triangle are `90°`, `55°`, and `3x + 5`, what is the value of `x`?

Answer 1

`=> x = 10`

Explanation:

The measures (angles) of a triangle sum to `180^o`.

`=>90 + 55 + (3x+5) = 180`

`=>145 +(3x+5)=180`

`=>3x + 5 = 35`

`=>3x = 30`

`=> x = 10`