Yes it is.
Yes. Any rational number divided by another rational number is also rational.
Yes
16/9 is a rational number.And if it were not, there would be no way to write it that could make it one.1.777777777777778
4.55555556 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 455555556/100000000. You can simplify this rational fraction if required.
Yes.
Yes.
Yes.
(1/41)/9 = 1/369 = 0.0027100271...
Rational
41/9 = 4 and 5/9
4.1 is the ratio of 41 to 10 ... completely rational.
-1/9 is rational because it can be expressed as a fraction (ratio).
Any addition, subtraction, multiplication, or division of rational numbers gives you a rational result. You can consider 8 over 9 as the division of 8 by 9, so the result is rational.
1 9/41
9/41= 0.2195122 (the 2 is repeating)
1). Quick check:Any number that you can completely write with digits is a rational number.So yes, -41 is rational.2). Formal mathematical analysis:Any number that can be written as the ratio of two integers is rational.-41 is the ratio of -41 and 1.So yes, -41 is rational.