The number that is its own opposite is zero. Zero is both a positive and a negative number at the same time.
Answer:
Decrease by 20%.
Step-by-step explanation:
We have to find the percent of increase or decrease from n to
.
Now,
So there is a decrease fro n to
.
Now, the percentage of decrease will be given by
=
=
= 20% (Answer)
convert all to a common ratio
24 1/6
30 3/6
36 2/6
(24+30+30+30+36+36)/6
186/6
the expected value is 31.