a ratio of integers
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It is a rational number, because it can be written as a fraction.
Every number can be written as a quotient.Every rational number can be written as a quotient of whole numbers.
-0.45 is a rational number as a rational number is a number which can be written in fractional form or p\q form.So -0.45 can be written as -45\100.Hence,-0.45 is a rational number
The number 5 is indeed a rational number. A rational number is one that is able to be written down as a simplified fraction. The number 5 would be written as 5/1.
As written, it's rational.