basic math help

Discussion in 'General Discussion' started by ILoveDinobot, Mar 24, 2011.

  1. ILoveDinobot

    ILoveDinobot Arise Rodimus Prime

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    I feel dumb, I remember this math from like middle school but I can't remember the way to figure out the formula one bit. It' so basic in fact I can't find it in my textbook. It's actually a small part of a larger problem.

    So basically the part I am stuck on is

    35/x= 2.8 and I have to find x.

    Any help?

    I did like 35/2.8= 12.5 But is that right?
     
  2. Strarf

    Strarf Crystal Convoy no more TFW2005 Supporter

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    Yes.
     
  3. Facemeat

    Facemeat Give me your Face(meat)!

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    Yep, 12.5 is correct.
     
  4. FatalT 71

    FatalT 71 Mr. JazzHunter

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    Correct
     
  5. tikgnat

    tikgnat Baweepgranaweepninnybong. TFW2005 Supporter

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    35/x= 2.8

    Times both sides by x, giving 35 = 2.8 x X.

    Then divide both sides by 2.8 giving

    35/2.8 = X.

    Basic substitution, but no problem not remembering, I mean, how long ago was middle school? Over a decade ago? ;) 
     
  6. ILoveDinobot

    ILoveDinobot Arise Rodimus Prime

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    Multiplying both sides by x is how I remember to do it "properly" for having to show my work, but I wasn't positive on the whole "cross multiplying" thing so I kind of said screw it and just divided the 35 by 2.8.

    Middle school was indeed over a decade ago for me :cry . A decade ago I was a junior in high school. Is it crazy that I find my graduate work easier than the projects and papers I had to do in middle school? pfft.

    EDIT: And thank you everyone, just put the whole problem together and submitted.
     

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