The definition of a rational number is the quotient of any two nonzero integers.
Yes.
The quotient of two nonzero integers is the definition of a rational number. There are nonzero numbers other than integers (imaginary, rational non-integers) that the quotient of would not be a rational number. If the two nonzero numbers are rational themselves, then the quotient will be rational. (For example, 4 divided by 2 is 2: all of those numbers are rational).
Yes, it is.
yes
The definition of a rational number is the quotient of any two nonzero integers.
No.
Usually not.
Yes.
The quotient of two nonzero integers is the definition of a rational number. There are nonzero numbers other than integers (imaginary, rational non-integers) that the quotient of would not be a rational number. If the two nonzero numbers are rational themselves, then the quotient will be rational. (For example, 4 divided by 2 is 2: all of those numbers are rational).
Eight - all nonzero integers are significant.
True.
Yes, it is.
That a = ±b
yes
Three. All nonzero integers are significant.
Five. Zeros that are after the decimal and are after nonzero integers are always significant.