No, -81 is not an irrational number because it can be represented in the form
x/y = -81
No
No because the square root of 81 is 9 which is a rational number
81*81 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
no. it is 9
An irrational number.
No. 81 is a rational number. An irrational number is a number with an endless amount of digits like pi or the square root of 2.
No. The square root of 81 is 9, which is a rational number.
No
No because the square root of 81 is 9 which is a rational number
81 as well as all whole numbers are rational numbers. Any number that can be written as a fraction is a rational number. An irrational number can be written as a decimal, but not as a fraction. An irrational number has endless non-repeating digits to the right of the decimal point. An example of an irrational number would be pi: π = 3.141592…
No - because it can be represented as a ratio of integers : 81 = 81/1 Any number that can be represented as a ratio of 2 integers is classified as a rational number (other than that you can't use 0 for the denominator)
81*81 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
No. The square root of 81/(-3) is rational. The square root of [81/(-3)] is imaginary (a kind of complex number).
no. it is 9
No, it is rational.
An irrational number.
No. The sum of an irrational number and any other [real] number is irrational.