Is -3.25 rational or irrational?

Question

2469 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-02-22T20:55:19

rational

A number is irrational if it is being multiplied by $\sqrt{- 1} = i$ $sqrt(-1)=i$ .

Answer 2 · 2018-02-22T21:04:48

$- 3.25 = - \frac{13}{4}$ $-3.25 = -13/4$ is rational

A number is rational if and only if it can be expressed in the form $\frac{p}{q}$ $p/q$ for some integers $p$ $p$ and $q$ $q$ .

We find:

$- 3.25 \cdot 4 = - 13$ $-3.25 * 4 = -13$

So:

$- 3.25 = - \frac{13}{4}$ $-3.25 = -13/4" "$ is rational.