9 animals are in each group.
Answer:
B
Step-by-step explanation:
the denominator should be the total amount of outcomes.
14/15=28/30
1/2=15/30
28/30-15/30=13/30
the answer is 13/30 because you need to find the LCD(least common denominator) in order to minus，the LCD of 15 and 2 is 30 so you get 28/30 minus 15/30 and you get 13/30
Answer:
21 weeks
Step-by-step explanation:
565+65=630/30=21
