Question

Okay guys I'm been reviewing Real Numbers but I had a questions? Is a decimal over an interger a rational number? Let say:

0.2/2

At first I thought it can be a rational number since 0.2 equals 1/5 but I don't know...

Answer 1

a
--
b
is a rational number when b not zero
and a/b does not simplify

like
2
-- is not rational
6

but
1
-- is rational
3

0.2 2
---=---- is not rational
2 2(10)
but if it simplified to 1/10
will be rational

Answer 2

Thank bud!