Question

Is #17 & #18 correct? I need help with #19

Answer 1

We are given three angles and we are asked to determine the value of

"x". To do that, we need to have into account that the three given angles are supplementary angles, this means that their sum adds up to 180 degrees. Therefore, we have the following relationship:

`(5x+11)+69+36=180`

Now we can add the constant terms:

`5x+116=180`

Now we subtract 116 from both sides:

`\begin{gathered} 5x+116-116=180-116 \\ 5x=64 \end{gathered}`

Now we divide both sides by 5:

`x=(64)/(5)`

Solving the operations:

`x=12.8`

Therefore, the value of "x" is 12.8