Answer: [tex]\sqrt{11}[/tex]
Step-by-step explanation:
1. To solve this problem you need to remember the definition of an irrational number.
2. An irrational number is defined as a number that cannot be written as a fraction.
3. Based on this information, you have:
[tex]-4=\frac{-4}{1}[/tex] (It is not irrational)
[tex]\frac{2}{9}[/tex] (It is not irrational)
[tex]\sqrt{11}[/tex] (Irrational)
[tex]8.26=\frac{413}{50}[/tex] (It is not irrational)
