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college algebra

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using scientific notation
4x10^9/2x10^-7

  • college algebra -

    4x10^9/2x10^-7

    divide top and bottom by 2 to give

    2x10^9/1x10^-7

    then subtract the powers of ten as it is a division

    9--7=16

    so the answer is

    2 x 10^16

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