Answer:
60
Step-by-step explanation:
First, 3÷20 which equals .15. after do .15×400 to get to 60 students
Remark
Many calculators have a key that will do this in one step. Mine is one of them. So let's start with the answer and then we'll do it the long way.
9C3 = 84. You put it into your calculator as 9 2nF nCr 3 =
Solution

3*4*7 = 84 which is what you set out to show.
Answer:
option D
Step-by-step explanation:
x/-3≤3
multiply by (-1) on both sides
x/3≥-3
x>=-9
Answer:
Thanks your amazing i hope you have a great day.
Step-by-step explanation:
Answer:
what is the question about the given numbers