Posted by **Karria** on Wednesday, December 10, 2008 at 9:45pm.

Putting in scientific notation (3000)(20000)

6*10^7

Solving

(3*10^5)(7*10^3)

21*10^9

Is this right, please help

- math 117 -
**s**, Wednesday, December 10, 2008 at 10:08pm
the first one is correct

the second one is not right because you can only have a digit in the ones section

so it should be 2.1 x 10^9

- math 117 -
**Reiny**, Wednesday, December 10, 2008 at 10:08pm
first one is right,

second one should have been 2.1 * 10^9

perhaps it was just a typo.

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