Answer:
<h2>k = 7</h2>
Step-by-step explanation:

Answer:
The number in the green box should be 3.
Step-by-step explanation:

3x+11=65
3x=54
x=18
180-(35+65)=y
180-100=y
80=y
Answer:
x = 20
Step-by-step explanation:
For a and b to be parallel, they must both add up to 180. Therefore, we can set up an equation:
3x+6x = 180
9x = 180
x = 20