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It is a rational number. A rational number is any number that can be written as p/q, where p and q are integers (and q is not equal to zero). Obviously 2 over 3 can be written as 2/3. Furthermore 2 and 3 are both integers. An irrational number is any number that cannot be written as a fraction as described earlier. This means that it has a infinite decimal expansion, with no repeating sequence. But if you would try to calculate 2 over 3, you'd just get 0.66666... where the 6 repeats infinitely many times. As I mentioned an irrational number cannot have a repeating sequence, so 0.66666... cannot be an irrational number, because the 6 repeats.
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Is 21 over the square root of 4 a rational or irrational?
It is equal to 21/2 which is a rational number
Is 5.4 an irrational or rational number?
5.4 = 5 2/5 = 27/5 so it is a rational number.
How do you turn an irrational number in to a rational number?
Some irrational numbers can be multiplied by another irrational number to yield a rational number - for example the square root of 2 is irrational but if you multiply it by itself, you get 2 - which is rational. Irrational roots of numbers can yield rational numbers if they are raised to the appropriate power
Is the square root of a number rational or irrational?
that depends on the number. sqrt(2) is irrational, sqrt(4)=2 is rational
Will any irrational number divided by an irrational number be irrational?
No.3*sqrt(2) and sqrt(2) are irrational. But their quotient is 3, which is rational.
Is 9 over 2 a rational or irrational number?
Rational
Is a rational number times a irrational number?
Can be irrational or rational.1 [rational] * sqrt(2) [irrational] = sqrt(2) [irrational]0 [rational] * sqrt(2) [irrational] = 0 [rational]
Is pi over 2 a whole integer rational or irrational number?
If you multiply or divide an irrational number - such as pi - by ANY rational number (except zero), you will ALWAYS get an irrational number.
Is 21 over the square root of 4 a rational or irrational?
It is equal to 21/2 which is a rational number
Is the square root of 10 over 2 rational or irrational?
The result would be an irrational number
Is the square of an irrational number rational?
Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.
Is .22222222.a rational or irrational number?
If it ends there, it is rational. If it continues with the same digit (2 in this case) over and over, it is also rational.
Is 2 a rational number or irrational?
It is rational. It is a whole number so it cannot be irrational.
Is an irrational number divided by an irrational number always a rational?
No. sqrt(2)/pi is not rational.
Is 5.4 an irrational or rational number?
5.4 = 5 2/5 = 27/5 so it is a rational number.
How do you turn an irrational number in to a rational number?
Some irrational numbers can be multiplied by another irrational number to yield a rational number - for example the square root of 2 is irrational but if you multiply it by itself, you get 2 - which is rational. Irrational roots of numbers can yield rational numbers if they are raised to the appropriate power
Is 2 over 5 rational or irrational?
It is rational
