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:
the C one is 18in and the E one is 12in
Step-by-step explanation:
Answer:
C. 8² ·π
Step by Step Explanation:
A=πr²
Answer:
3.78
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
seven less than twice a number equals 19. = 13. Answer.