Answer:
19.84
the decimal has to stay in the same place
Step-by-step explanation:
I mean they both have a factor of 3 you just take -3x > 9 and just flip it
2) c
3) d
4) a
5) d
6) c
7) a
8) b
First we calculate how many ways you can choose four books from a set of eight.
We use the formula n! / [r! * (n-r)!]
8! / [4! * 4!]
= 8*7*6*5 / 4*3*2*1 = 70 ways
Then we have to calculate how many permutations can be made from 4 objects which equals 4*3*2*1 = 24
So, the TOTAL number of ways = 70 * 24 = 1,680
10k^4+10k^3+8k^2+8k+10/k+1 not sure if this is what you are looking for or not hope it helps