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Light travels at a speed of 186,282 miles per second. How could this number be expressed in scientific notation?

1)1,862.82 x 10 x10 x10
2)1.86282 x 10 x10 x 10 x10 x10
3)1.86282 x 10 x10 x10 x10
4)186.282 x -10 x-10 x -10

  • math -

    1.86282 * 10^5
    I guess that would be B, but it's not scientific notation as given there.

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