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Is 
(36)/(25)*sqrt11 rational or irrational?
Choose 1 answer:
(A) Rational
(B) Irrational
(C) It can be either rational or irrational

Is 362511\frac{36}{25}\sqrt{11} rational or irrational?\newlineChoose 11 answer:\newline(A) Rational\newline(B) Irrational\newline(C) It can be either rational or irrational

Full solution

Q. Is 362511\frac{36}{25}\sqrt{11} rational or irrational?\newlineChoose 11 answer:\newline(A) Rational\newline(B) Irrational\newline(C) It can be either rational or irrational
  1. Evaluate expression: Evaluate the expression (3625)11(\frac{36}{25})\sqrt{11}.(3625)(\frac{36}{25}) is a rational number because it can be expressed as a fraction of two integers. However, 11\sqrt{11} is an irrational number because it cannot be expressed as a fraction of two integers; the square root of a non-perfect square is always irrational.
  2. Nature of product: Determine the nature of the product of a rational number and an irrational number.\newlineThe product of a rational number and an irrational number is always irrational.\newlineThis is because if the product were rational, then you could express the irrational number as the quotient of the rational product and the rational number, which is not possible.
  3. Apply rule: Apply the rule to the given expression.\newlineSince (3625)(\frac{36}{25}) is rational and 11\sqrt{11} is irrational, their product (3625)11(\frac{36}{25})\cdot\sqrt{11} must be irrational.

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