Question

Keisha writes the following list of number -9, $\sqrt{8}$ , 3.0, $\frac{2}{5}$, 2.4222..., $\pi$a. Which numbers are rational? b. Which numbers are irrationai?

Answer 1

Answer:

a. The rational numbers are;

$-9,3.0,\frac{2}{5}$

b. The irrational numbers are;

$\sqrt{8},2.4\bar{2},\pi$

Explanation:

Rational numbers are numbers that could be expressed in the form of a fraction of two intergers. For example;

$\frac{1}{2},\frac{3}{4},3,\frac{4}{1},\frac{-9}{1}$

Irrational numbers are numbers that can not be expressed in the form of a fraction of two intergers. For example;

$\sqrt{2},\pi,e,\sqrt{11}$

Therefore for the given numbers;

a. The rational numbers are;

$-9,3.0,\frac{2}{5}$

b. The irrational numbers are;

$\sqrt{8},2.4\bar{2},\pi$