Question

Find the measurement of ∠DOC Round your answer to the nearest whole number.

Answer 1

Explanation:

`2x + 3x + 27 = 180 |sum \: of \: angle \: on \: a \: straight \: line \: is \: equal \: to \: 180| \\ 5x + 27 = 180 |collect \: like \: terms \: | \\ 5x = 180 - 27 \\ 5x = 153 |divide \: both \: side \: by \: 5| \\ x = 30.6 \\ since \: x \: is \: 30.6 \: then \: 2x \: is = \\ 2 * 30.6 = 61.2 |final \: answer|`

Answer 2

61.2 degrees

Explanation:

You want to isolate x on one side of the equation and the numbers on the other side

3x + 2x + 27 = 180

3x + 2x +27 - 27 = 180-27

5x = 153

x = 153/5

x = 30.6

<DOC = 2x

2x = 30.6 x 2

61.2 degrees