If there are no numbers after the 9 it is rational
It isn't. All integers are rational numbers.
4.6 is rational.
Rational
10.01 is a rational number
It is a rational number
Rational.
Rational
No
If x is rational the it is rational. If x is irrational then it is irrational.
rational
Rational. Rational. Rational. Rational.
No. A rational plus an irrational is always an irrational.