Study guides

☆☆

Q: Is 2 fifths rational

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

The square root of 2, for example, is irrational.sqrt(2)*sqrt(2) = 2 which is rational.

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).

In their rational form, the denominators have factors other than 2 and 5.

Yes, because the answer is 3/2 which is a rational number.

Certainly. Otherwise, there would be a rational number whose square was an irrational number; that is not possible. To show this, let p/q be any rational number, where p and q are integers. Then, the square of p/q is (p^2)/(q^2). Since p^2 and q^2 must both be integers, their quotient is, by definition, a rational number. Thus, the square of every rational number is itself rational.

Related questions

Rational

the square root of 2 fifths of irrational is 0.565685425

It is a rational number.

Yes.

yes it is(=

No.

Irrational

Yes, 2 fifths is half of 4 fifths.

4/5 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.

Yes. Any number that can be written as one integer over a non-zero integer is a rational number. 2 3/5 = (2×5+3)/5 = 13/5 which is the form of one integer over a non-zero integer, thus it is rational.

yes because you can put it as a over b

Four-fifths. 2/5 + 2/5 = 4/5.

People also asked