I think it is the first option. hope this helps :)
16/21 divided by 4/9 is equivalent to 16/21 x 9/4 = 144/84 which reduces to 12/7. So 12/7 is your answer.
Answer: look at my work its 10 pi cm ^2
Step-by-step explanation:
Answer:
42 degrees
Step-by-step explanation:
16-7 is 9, so basically you could do, and these are not the only ones you can do..
100-91
10-1
15-6
20-11