Yes, it is.
No, but three over eight is.
yes, 1/9 is a rational number, also written as .11111111111111...Even though the decimal expansion is infinite, it is also a recognizable pattern, and hence rational.
6.444444444444444
Yes. Any rational number divided by any other rational number is a rational number.
It is 5 and 1/3 in its simplest form as a mixed number
It is irrational because when you divide 2 by 8 you get a terminating decimal,0.205.
five over eight is less than nine over ten
Rational.
It's rational. It's the ratio of -1 to 9 .
is 5 over 7 a rational number
Well, honey, a rational number is any number that can be expressed as a fraction where the numerator and denominator are integers. So, yes, 15 over 7 is a rational number because it can be written as 15/7, where both 15 and 7 are integers. But remember, just because it's rational doesn't mean it's always logical!