is -2/3 rational?

Answer 1

Yes, -2/3 is rational. A rational number can be expressed as a fraction, where the numerator and denominator are integers. In this case, both -2 and 3 are integers, so -2/3 is a rational number.

Answer 2

is 7/9 rational?

Answer 3

Yes, 7/9 is rational because it can be expressed as a fraction where both the numerator (7) and the denominator (9) are integers.

Answer 4

is Pi/2 rational?

Answer 5

No, Pi/2 is not a rational number. A rational number can be expressed as a fraction, where both the numerator and denominator are integers. However, Pi is an irrational number, and when divided by 2, it remains irrational.