Yes.
Because it can be expressed as the ratio 85/100.
85 is rational, because it can be expressed as a fraction.
Because it can be expressed as the ratio of two integers: 85/100.
No. The square root of an integer is always either an integer or an irrational number.
It is a rational number. It can be written as a fraction.
yes
Is 12.05 a rational number or irrational number?
1.96 is a rational number
It is a rational number, as it can be written as a fraction.
Yes, the sum is always rational.
There is no such thing as a number that is both rational and irrational. By definition, every number is either rational or irrational.