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Math Help - Find x

  1. #1
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    Find x



    solve for x
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    Quote Originally Posted by moose51 View Post
    solve for x
    Use the Pythagorean theorem, noting that the hypotenuse has length x+8.
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  3. #3
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    could you do x/8 by x+6/20 ?
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    Quote Originally Posted by moose51 View Post
    could you do x/8 by x+6/20 ?
    You will need to form your question more clearly. Could one do what?

    The Pythagorean theorem will work here. Your hypotenuse has length x+8, and the two legs are of length x+6 and 20. Set up the equation, expand, and solve for x.
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  5. #5
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    ok but tell me if im doing this correctly i started with:

    (x+6)2 + (20)2 = (x+8)2
    x2+12x+36+400=x2+16x+64
    x2+12x+372=x2+16x
    x2+372=x2+4x
    4x=372
    x=93

    but i think i did something wrong
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  6. #6
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    Quote Originally Posted by moose51 View Post
    ok but tell me if im doing this correctly i started with:

    (x+6)2 + (20)2 = (x+8)2
    x2+12x+36+400=x2+16x+64
    x2+12x+372=x2+16x
    x2+372=x2+4x
    4x=372
    x=93

    but i think i did something wrong
    That is correct.
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