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anonymous
 one year ago
Identify the number that does not belong with the other three. Explain your reasoning. negative 10 over 2, negative 13.4, square root 18, 22.7 repeating 7
anonymous
 one year ago
Identify the number that does not belong with the other three. Explain your reasoning. negative 10 over 2, negative 13.4, square root 18, 22.7 repeating 7

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ali2x2
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439785746788:dw that doesn't belong because it's a repeating number

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Explain the reason if you could please.

ali2x2
 one year ago
Best ResponseYou've already chosen the best response.1that doesn't belong because it's a repeating number

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.3or you can use number system

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.5\(\dfrac{10}{2}\) does not belong there because it is the only integer in the given list \(13.4\) does not belong there because it is the only negative number \(\sqrt{18}\) does not belong there because it is the only irrational number

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.5If I had to choose one, I would pick because \(\sqrt{18}\) as I feel irrational/rational is a more important difference compared to other

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2I have to agree with @ganeshie8 simplifying \[\sqrt{18} \] gives us \[\sqrt{18} \rightarrow \sqrt{9 \cdot 2} \rightarrow 3 \sqrt{2}\] \[\sqrt{2} \] is irrational because we can't express this as a fraction. as for the decimal choices, you can express that as a fraction (positive or negative...doesn't matter) for 13.4 13.4 x 10 =134 134/10 = 13.4 similarly for 27.77 (yes the 7 is repeating, but for simplicity reasons I will just type 7 twice) 27.77 x 100 = 2777 2777/100 = 27.77 and \[\frac{10}{2} \] can be reduced to \[5\] that number as a fraction is \[\frac{5}{1}\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2oops forgot to type that 5/1 is rational because it can be expressed as a fraction. You can view more examples here: http://www.mathsisfun.com/rationalnumbers.html

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0$$x=2.777\dots\\10x=27.777\dots\\10xx=25\\9x=25\\x=\frac{25}9$$ which is how you write a repeating decimal like that as a fraction

dayakar
 one year ago
Best ResponseYou've already chosen the best response.0Identify the number that does not belong with the other three. Explain your reasoning. negative 10 over 2, negative 13.4, square root 18, 22.7 repeating 7 1) 10/2 = 5 (rational number) 2) 13.4 (terminating decimal) 3) square root 18 = 3 * square root 2 (irrational number) 4) 22.7 repeating 7 (non terminating repeating decimal) therfore,1) ,2) and 4) are rational numbers only 3) is irrational
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