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Ratio question

  1. Feb 8, 2010 #1
    hi i do not understand how to get this as a ratio. 1.25 x 10-2Sv-1 = 1:80

    (the - is a to the power of), how does that equal 1:80 what do i do step by step to get 1:80

    please could you help i do not understand this.
  2. jcsd
  3. Feb 8, 2010 #2


    Staff: Mentor

    Your equation doesn't make a whole lot of sense. I can't tell if what you wrote as Sv-1 is
    a) S*v - 1
    b) Sv - 1
    c) Sv-1
    Without any context, I have no idea what you mean.

    Let's take a look at the rest of what you have.
    .125 = 1/8 and .0125 = 1/80
    Check these by dividing 1 by 8 and 1 by 80.
    1.25 x 10-2 = 0.0125 = 1/80
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