The Answer is B. 14.7 meters per second
Lisa's class has a higher ratio of tall to short students
This is a problem of permutation or arrangements, the word PRECALCULUS has 11 letters, of which 3 letters appear twice, we want to get the number of indistinguishable arrangements, this is how we do it,
![P_r^n=\frac{n!}{(n-r)!}](https://tex.z-dn.net/?f=P_r%5En%3D%5Cfrac%7Bn%21%7D%7B%28n-r%29%21%7D)
For our problem, what we do is
Answer:
3 drops of green
Step-by-step explanation:
Green: Blue
1 : 2
We use 6 drops of blue
6/2 =3 So we need to multiply each number by 3
Green: Blue
1*3 : 2*3
3 : 6
We need 3 drops of green
Answer: 22
Step-by-step explanation: