1.

Is - 89 Rational or Irrational

Is √101 Rational or Irrational

-89 is rational

√101 is irrational

Step-by-step explanation:

An irrational number is a number that cannot be expressed as a fraction in terms of whole numbers.

-89 = - 89/1 which is a fraction and is therefore rational

√101 does cannot be put into a fraction of whole numbers and is therefore irrational