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Mathematics 9 Online
OpenStudy (anonymous):

explain

OpenStudy (anonymous):

because....

OpenStudy (anonymous):

how is |dw:1340393018787:dw| a rational number ??????????????????

OpenStudy (phi):

rational means a ratio of integer numbers. 1.21 is the same as 121/100 both top and bottom are perfect squares , so you get 11/10

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