Explanation:
Rational numbers are numbers that can be written as a fraction of two whole numbers. Whole numbers are rational too.
Irrational numbers can't be expressed as a fraction.
For these numbers we have -2/5 which is already a fraction, therefore it's a rational number.
1.5 is can be written as 3/2 so it's rational.
[tex]0.\bar{3}=\frac{1}{3}[/tex]
it's rational
[tex]\sqrt[]{9}=3[/tex]
rational.
Square root of 7 doesn't have a whole result, so it's irrational
Answer:
The correct option is the third one:
