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The similar triangles below have congruent angles and proportional sides. Express z in terms of x and y.?

this is the link to the triangles: http://s244.photobucket.com/albums/gg9/waterisima/?action=view&current=n1058035859_403954_7468708.jpg

there is also another question:
You start a business manufacturing golf balls, spending $42,00 for supplies and equipment. You figure it will cost $12 per dozen to manufacture golf balls. How many dozens of golf balls must you produce before your average total cost per dozen is $15?

THANK YOU :D
Idk but can someone help me?

http://answers.yahoo.com/question/index;_ylt=Ao7o93HW3y7Ssyl74efmRfbsy6IX;_ylv=3?qid=20090519142033AA6cI0t

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6 Responses to “The similar triangles below have congruent angles and proportional sides. Express z in terms of x and y.?”

  1. Catherine Says:
    March 1st, 2010 at 3:54 am

    do ur own homework

    srry
    References :

  2. VampGal Says:
    March 1st, 2010 at 4:09 am

    Idk but can someone help me?

    http://answers.yahoo.com/question/index;_ylt=Ao7o93HW3y7Ssyl74efmRfbsy6IX;_ylv=3?qid=20090519142033AA6cI0t
    References :

  3. Kari Says:
    March 1st, 2010 at 4:58 am

    z=x

    z=y+2

    not sure on the 2nd question
    References :

  4. Woodrow Wilson Says:
    March 1st, 2010 at 5:26 am

    15 dozen golf balls
    References :

  5. FreshTaDef Says:
    March 1st, 2010 at 5:44 am

    tetrdkl
    References :

  6. Awaken To The Pain Says:
    March 1st, 2010 at 5:59 am

    For the second question, you must simply add 42 to the number of golf balls(times 12), which equals 15 times the number of golf balls you must sell to make the average.

    42 + 12g = 15g
    References :

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