Yes - all integers, including 90, are rational numbers.
yes
The answer to the question that is given is 344444444/1000000000. This simplifies to 86111111/250000000.However, if your original number was meant to be 0.344... recurring, the answer is 31/90.
Yes.
It must be a generalised rational number. Otherwise, if you select a rational number to multiply, then you will only prove it for that number.
yes
Since it can be written as a fraction (9.0 = 90/10), then it 9.0 is a rational number.
No.
No.
It is a rational number. It can be written as a fraction.
-90 squared is rational - it is +8100. All perfect squares are not only rational but they are integers.
Yes, 8.888888 is a rational number because it can be expressed as a fraction. Specifically, it can be represented as ( \frac{88}{10} ) or ( 8 + \frac{8}{90} ), which simplifies to ( \frac{80}{9} ). Since it can be expressed as the quotient of two integers, it qualifies as a rational number.
yes
Is 12.05 a rational number or irrational number?
1.96 is a rational number
No, it is not.
It is a rational number, as it can be written as a fraction.
The answer to the question that is given is 344444444/1000000000. This simplifies to 86111111/250000000.However, if your original number was meant to be 0.344... recurring, the answer is 31/90.