5/9
5 times 4= 20
12 times 3=36
20/36=5/9
Answer:

Step-by-step explanation:
The given pair of angles lie on a line, hence they are classified as linear angles. They possess the property by which their sum is equal to 180°.





Answer:
a
a
a
a
bbbb
Step-by-step explanation:
Put the numbers of books you have read
Uhhh I think it'd be C and... probably A or D. I'm not 100% sure, but if I was taking the test, that is what I would choose.