### Home > INT2 > Chapter 7 > Lesson 7.1.1 > Problem7-12

7-12.

Identify each sum or product as a rational number or an irrational number.

1.  $6+\sqrt{5}$

A rational number is a number that can be written as a fraction of integers. Can a square root be written as a fraction of integers?

Irrational

1.  $\frac{2}{3}+\frac{3}{4}$

Rational

1.  $\frac{3}{5}·\sqrt{11}$

1.  $\sqrt{9}\cdot\sqrt [ 3 ] { 9 }$