Which numbers are irrational? Check all that apply

Answer:
An irrational number is real number that cannot be expressed as a ratio of two integers, i be live it would be √80, π, and 7/18. I am 100% sure π is one of the answers. I hope this helps. :)
Answer:
A real number which can be expressed in the form of a/b where b≠0 is called rational number.
A real number which cannot be expressed in the form of a/b where b≠0 is called irrational number.
1. [tex]\sqrt{196}[/tex] = 14 = 14/1 ..... rational number
2. [tex]\sqrt{80}[/tex] = [tex]4\sqrt{5}[/tex] ..... irrational number
3. [tex]\sqrt{16}[/tex] = 4 = 4/1 ........ rational number
4. [tex]\pi[/tex] = 3.142857...... ....... irrational number
5. [tex]\sqrt{12}[/tex] =[tex]2\sqrt{3}[/tex] ..... irrational number
6. [tex]\frac{7}{18}[/tex] ............. rational number (a/b form)