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Since it is the square root of a negative number, it is actually imaginary, neither rational nor irrational. It is equal to 9i, or 9 times whatever the square root of negative one is.
square root of -81 = square root of 81 times i = 9i
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∙ 14y ago
De'Nasia Williams
is The square root of 81 irrational, rational, intgers or natural or whole numbers
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Is 81 a 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.
What is the value of n for which square root of n be a rational number?
n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.n is a square of a rational number. For example, 4 or 81, or 2.25 or 36/25.
What is the value of 'n' for which under root 'n' be a rational number is?
n must be the square of a rational number. That is, n must be either a square number or the ratio of two square numbers. For example, n = 16 then sqrt(n) = 4 Or n = 81/169 then sqrt(n) = 9/13
The sum of the digits of a certain two-digit number equals the square root of the number What is the number?
81
What two integers does the square root of 94 lie BETWEEN?
The square root of 94 would lie between 9 (9x9=81) and 10 (10x10=100).
Is the root of 81 an irrational number?
No. The square root of 81 is 9, which is a rational number.
Is the square root of of 81 over negative three irrational?
No. The square root of 81/(-3) is rational. The square root of [81/(-3)] is imaginary (a kind of complex number).
Is sqrt 81 a irrational number?
No because the square root of 81 is 9 which is a rational number
Is 81 a 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.
Is the square of 81 a rational number?
The square root of 81 is 9 which is a rational number
Is the square root of 81 irrational?
no. it is 9
Is the square root of 81 an irrational number?
No.
Is the square root of 81 rational?
Yes. The square root of 81 is 9 - a natural number and all natural numbers are rational numbers.
Is the square root of 81a rational number?
Yes. The square root of 81 is 9, which is a rational number.
Is -81 is rational or irrational?
81*81 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Which type of number is square root of 81?
Integer, rational, and real.
Is the square root of 81 a rational number?
Yes. It's +9 and -9. They're both rational.
