Answer:
pi + -pi = 0
Step-by-step explanation:
We need to have irrational numbers that we are adding and end up with a rational number. This means that it is not closed under addition
pi is an irrational number
0 is a rational number
pi + -pi = 0
irrational + irrational = rational
Answer:
C
Step-by-step explanation:
3/10=0.3=30%
725/1000=0.725=72.5%
4/10=0.4=40%
Absolute value is always positive, it is the distance from 0
