is 2.56 or -22/9 irrational?

\(2.56 = \dfrac {256}{100} \mbox{ is the ratio of two integers so it is a rational number.} \\ -\dfrac{22}{9} \mbox{ is also the ratio of two integers and so also a rational number.}\)

Thanks Rom,

I just hunted high and low too find this answer.

I knew that you had answered a question because I saw your icon in the answer list but i could not jump straight into it because it does not recognise answers that are pure LaTex.

To get over this problem could I please request that you copy  the original question into your post before you start answering.

If you do that it will no longer be a problem.

Thank you