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30 Nov 2007, 00:47
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If 9 is a factor of 2x, then which of the following is not an integer?
a) 6x/54 + 2x/3
b) (4x - 18)/9
c) (2x + 27)/9
d) (81 - 4x^2)/81
e) (2x - 3)/3
I got this correct but I still don't understand why. According to me, all can be integers. Your inputs? Thanks.
a) 6x/54 + 2x/3
b) (4x - 18)/9
c) (2x + 27)/9
d) (81 - 4x^2)/81
e) (2x - 3)/3
I got this correct but I still don't understand why. According to me, all can be integers. Your inputs? Thanks.
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30 Nov 2007, 01:31
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If 9 is a factor of 2x, then which of the following is not an integer?
a) 6x/54 + 2x/3
b) (4x - 18)/9
c) (2x + 27)/9
d) (81 - 4x^2)/81
e) (2x - 3)/3
2x = 9k ie: x = 18k
All can be
a) 6x/54 + 2x/3
b) (4x - 18)/9
c) (2x + 27)/9
d) (81 - 4x^2)/81
e) (2x - 3)/3
2x = 9k ie: x = 18k
All can be
