It a measure of the amount of variation or despersion of a set of values
The answer for this is 2.8
Answer:
4/18 or divide both by anything or times it
Step-by-step explanation:
Answer:

Step-by-step explanation:
Look at the picture.

1. - 2,5(1-2n)-1,5n= - 2,5+5n-1,5n= - 2,5+3,5n
2.no
3.yes
4.no