A perfect square is a square of an integer.The set of integers is closed under multiplication. That means that the product of any two integer is an integer. Therefore the square of an integer is an integer.
Integers are rational numbers so the square [which is an integer] is a rational number.
Yes
Yes.
All positive integers which are not perfect squares.
Yes, of some; the square root of any perfect square is rational - for example, the square root of 4, of 9, of 16, etc.On the other hand, if your "composite number" is not a perfect square, then its square root is irrational.
Negative 1 is a rational number. It is an integer (though not a counting number) and all integers are rational.
It is a rational number - as are ALL perfect squares.
yes it can All perfect squares are rational numbers as the definition of a perfect square is a number which is the product of an integer with itself. An integer is a rational number, and multiplying an integer by an integer produces another integer.
Yes
Yes.
-90 squared is rational - it is +8100. All perfect squares are not only rational but they are integers.
That isn't possible. Rational numbers either terminate or have a repeating pattern, and irrational numbers are all the rest. Perfect squares terminate, therefore they are rational.
The number line includes all rational numbers but also has irrational ones. It is the REAL number line. The square root of non-perfect squares are on it and pi is also on it and they are not rational.
No. 1.5^2 = 2.25 is rational.
No. The square roots of perfect squares are rational.
The square root of ANY positive integer is either a whole number, or an irrational number. Only the perfect squares have whole number square roots; all the rest are irrational. 97 is not a perfect square therefore √97 is irrational.
All positive integers which are not perfect squares.
Right angles an odd number of factors