-.777 is rational because it can be put into a fraction : -777 / 1000
1/11 is rational because it is a fraction
The square root of 49 is rational because it equals 7 which is a whole number and can be put into a fraction.
The square root of 200 is irrational because it cannot be put into a fraction.
37 1/2 divided by 2 1/2=15
Marco can fill 15 cups with juice samples.
Check:
2 1/2x15=37 1/2