Answer:
7.8
Step-by-step explanation:
1. you add all the numbers together
2. Divide by 5
3. Then divide answer by 10
4. You get your final answer
ANSWER
139°
EXPLANATION
One of the interior angle properties of a parallelogram is that adjacent interior angles are supplementary.
This means that, the adjacent interior angles add up to 180°.
If

Then

OR



Answer:
10
Step-by-step explanation:
- plug 3 into m and plug 1 into n
- order of operations say you multiple first so you multiple 3 times 3 which equals 9
- then you add 1 and 9 which equals 10