Question

For parallelogram ABCD, find the value of x. Round to the nearest tenth if needed

Answer 1

We know that in a parallelogram the opposite sides are equal, then from the figure:

`3x+5=6x-10`

Solving for x we have:

`\begin{gathered} 3x+5=6x-10 \\ 3x-6x=-5-10 \\ -3x=-15 \\ x=(-15)/(-3) \\ x=5 \end{gathered}`

Therefore x=5 and the answer is the third option.