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11 June, 11:33

Find the product. Write your answer in

exponential form.

5^7•5^-9•5^-5

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Answers (1)
  1. 11 June, 12:52
    0
    5^7 = 5 * 5 * 5 * 5 * 5 * 5 * 5 = 78,125

    5^-9 = 5 : 5 : 5 : 5 : 5 : 5 : 5 : 5 : 5 = 0.000000512

    5^-5 = 5 : 5 : 5 : 5 : 5 = 0.00032

    78,125 * 0.000000512 * 0.00032 = 0.0000128‬

    Answer: 0.0000128‬ or 1.28 x 10^-5
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