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
Given:
Product of two numbers is 24
Sum of two numbers is -11
-8 and -3 are the two numbers.
Answer:
x > -6
Step-by-step explanation:
Move 6 to the other side:
0.5x > -3
x > -6
You have to use the formule: y2-y1/x2-x1
-2-(-2)/4-(-3)=0/7
Answer:
32
Step-by-step explanation:
