Respuestas

2012-12-11T16:05:44+01:00

64400=6.4*10^4

0.0000049=4.9*10^-6

7400000=7.4*10^^6

 

2012-12-11T17:17:03+01:00

 

 

64400=6.4 x 10^4

 

0.0000049=4.9 x 10^-6

 

7400000=7.4 x 10^6

 

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