It is 9, though if you must have it in the form of a ratio, you could try 9/1.
9 is a rational number
9 is a rational number
9 is a rational number
It would depend on where you put the parentheses. 7/9 - 9 is a rational number 7/(9-9) is not even a number at all - surely not a rational number.
-9 is a rational number
-9 is the ratio of 9 to -1. It's completely rational.
Yes, 9/5 is rational. A rational number is any number that can be expressed in a fraction.
97 is a rational number.
It is a whole number so it is rational.
Yes. Any rational number divided by another rational number is also rational.
Yes
Rational. A rational number, z, is any number that can represented in the formx/y = z