MATH

When solving for x in the equation 5.2x-0.01< 0.2x+3.6 Is the answer x <7.32?

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  1. no, but close

    I multiplied each term by 100
    520x - 1 < 20x + 360
    500x < 361
    x < 361/500
    x < .722

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    posted by Reiny
  2. okay, but what about a repeating decimal like 0.4444...+ x =1?
    Would you use the equation:
    10n= 4.4444
    n= 0.4444
    to equal 4/9 then, 4/9 + x =1
    x= 1 - 4/9
    x= 2/3 ?

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  3. 0.4444...+ x =1
    4/9 + x = 1
    x = 1 - 4/9
    x = 9/9 - 4/9
    = 5/9

    How did you get 2/3 ?????

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    posted by Reiny
  4. I didn't change the one to 9/9 to match the other denominator. I used 1/1 and totally missed it! Thanks for pointing that out.

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