A) If you have 12 dogs and cats (I assume 12 in total) and divide those by two, you get six dogs and six cats. It has to be more dogs than cats, and the sum of those two has to be twelve. So to reach the sum 12, while one number is bigger that the other, the number has to be 7 or more.
10P4 = 10! / (10-4)! = 10*9*8*7 = 5040
9C4 = 9! / 5! 4! = 9*8*7*6 / 4*3*2*1 = 126
Answer:
3.207 x 
Step-by-step explanation:
Answer:
48.
Step-by-step explanation:
you multiply 16 x 3 to get your final answer.
Answer: 
Step-by-step explanation:
We can rewrite the left hand side as a perfect square, more specifically
So, taking the square root of both sides,
