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Math Help - subject changes in formula

  1. #1
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    subject changes in formula

    y=\frac{3}{x + 2} ; make x the subject
    G=\pi a^2 k ; make a the subject

    A = 2\pi r^2 + 2\pi r h ; make h the subject

    Any help?

    Thanks so much! life savers!
    Last edited by krinkle; September 21st 2010 at 05:03 PM.
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  2. #2
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    Please use some spaces, brackets and correct symbols to make reading these easier...

    Is 1) y=\frac{3}{x + 2} or y=\frac{3}{x} + 2?

    Is 2) G=\pi a^2 k?

    Is 3) A = 2\pi r^2 + 2\pi r h?
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  3. #3
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    All right and yes, 1) its the first option you put forward.
    Would be great help if I could get some answers!
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  4. #4
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    How about showing us your attempt at it instead of just asking us to give you answers?
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