Question

rational or not rational?
20pi
square root of 81
-6/13
-55.36 (with little line on top)
-2 (square root) 2

Answer 1

try it out ill let you know if you get it wrong or not and help you out.
Rational definition:
Any number that can be made by dividing one integer by another. The word comes from "ratio"
Irrational definition:
Any real number that cannot be expressed as a ratio between two integers.

Ratio definition: A ratio shows the relative sizes of two or more values.

Answer 2

any number that you can express as a fraction is rational. -6/13 is rational. also any number that repeats is also rational 5.5678666666666666666666..... is rational.

any number that can not be expressed as a fraction is irrational. the three you will see most often is pi , e and sqrt(2). these are all irrational

Answer 3

not rational
rational
rational
rational
not rational

Answer 4

ditto that ^^

Answer 5

=P

Answer 6

haha I had done it, but i just was not sure of the negative fraction

Answer 7

nice always good to recheck i always do that to lol

Answer 8

lol yeah