Answer:
rational
irrational
rational
irrational
rational
Step-by-step explanation:
the first answer here is wrong and does not fit to the problem with 5 expressions.
13/90 is rational per definition (a ratio of two natural or integer numbers).
sqrt(84) is therefore irrational.
4/11 is per definition rational.
12×pi is irrational, because pi is irrational.
4.6363636363... is rational, because it is 51/11
