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anonymous
 one year ago
Which of the following is a rational number?
square root 15 square root 16, square root 21, square root 22
square root 15
square root 16
square root 21
square root 22
anonymous
 one year ago
Which of the following is a rational number? square root 15 square root 16, square root 21, square root 22 square root 15 square root 16 square root 21 square root 22

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2hint: \[\Large 16 = {4^2}\] whereas 15, 21, and 22 are not perfect squares

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2so we can write: \[\Large \sqrt {16} = 4 = \frac{4}{1}\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2for example we can not find a pair of positive integer, say m and n, such that \[\Large \sqrt {21} = \frac{m}{n}\] with n different from zero

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2no worries! :) what is the right option?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.2better is square root of 16

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes square root 16 is the right answer (:

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i knew it was the right answer cause thats what i had
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