Answer:
D
Step-by-step explanation:
Answer:
19
Step-by-step explanation:

Answer:
Its just 3
Step-by-step explanation:
Because its absolute value.
Hope this helps!
Answer:

Step-by-step explanation:
One property of parallelogram is that opposite angles have the same measure, so we can write down:

Another property is that two adjacent angles are supplementary (meaning that they add up to 180 degrees). Thus, the following equations are true:

Solve the equations:

To check, add up all 4 angles and check if they sum up to 360 degrees:

And please ignore the fact that I cannot insert the degree sign :(
20x+4y. I hope I helped (: