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anonymous

  • one year ago

~I will give medal to the person who helps me ~ Given ABC find the values of x and y. In your final answer, include all of your calculations (Picture will be below)

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    |dw:1438643579023:dw|

  3. JoannaBlackwelder
    • one year ago
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    Nice drawing. :-) Any ideas how to start?

  4. anonymous
    • one year ago
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    well from the last person who tried to help totally confused me ~ but i asked my teacher to but she made my confusion worse this is what she said. Let CD = x-9 6/x = (x-9)/6 cross multiply 36 = x^2 - 9x x^2 - 9x - 36 When you factor this you will get 2 binomials. Set each equal to 0 and solve. Only the positive answer will work. Then set up another proportion with 9/y = y/answer for x

  5. JoannaBlackwelder
    • one year ago
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    Hm, that could work. Let me show you how I would start it.

  6. anonymous
    • one year ago
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    alright ~`

  7. JoannaBlackwelder
    • one year ago
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    |dw:1438644079169:dw| Pyth used 3 times on the 3 right triangles

  8. JoannaBlackwelder
    • one year ago
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    Then I used substitution to simplify one equation to only one variable

  9. anonymous
    • one year ago
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    wait what did you substitute ??

  10. JoannaBlackwelder
    • one year ago
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    |dw:1438644230084:dw|

  11. JoannaBlackwelder
    • one year ago
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    |dw:1438644298448:dw|

  12. JoannaBlackwelder
    • one year ago
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    See how I did that?

  13. anonymous
    • one year ago
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    pythagorean theorem right ?

  14. JoannaBlackwelder
    • one year ago
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    3 times, then substituted to make one equation with only x

  15. anonymous
    • one year ago
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    ohh yea ! I think I understand now but this is so different from what the other person tried to tell me.

  16. JoannaBlackwelder
    • one year ago
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    Yeah, it is using formulas you already use in a more complex way, but you don't have to memorize a new formula. That's why I like it. :-)

  17. anonymous
    • one year ago
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    this formula is the pythagorean one right ?

  18. anonymous
    • one year ago
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    it has the times 2 on each number ~

  19. JoannaBlackwelder
    • one year ago
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    |dw:1438644708961:dw| All three of these are Pythagorean

  20. JoannaBlackwelder
    • one year ago
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    And those are squares, not times 2

  21. anonymous
    • one year ago
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    ohhh ~ My dumb mistake ! hahaha ~

  22. JoannaBlackwelder
    • one year ago
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    :-) No worries

  23. anonymous
    • one year ago
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    but what type of equation type is this ? jw im a little rusty on my algebra stuff so I don't remember much

  24. JoannaBlackwelder
    • one year ago
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    Quadratic

  25. anonymous
    • one year ago
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    alright ~~ but i never used it for this

  26. JoannaBlackwelder
    • one year ago
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    The formula your teacher gave you was quadratic

  27. anonymous
    • one year ago
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    oh well Im sorry its just super hard with all these different equation types

  28. JoannaBlackwelder
    • one year ago
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    No worries, I know it can be tricky to keep up with it all.

  29. anonymous
    • one year ago
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    ill try my best, but what are we trying to find first the x or y?

  30. anonymous
    • one year ago
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    the problem says find x and y

  31. JoannaBlackwelder
    • one year ago
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    We are finding x first just because it worked out to be easier to solve for it first.

  32. anonymous
    • one year ago
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    alright, so its \[6^{2}\]

  33. anonymous
    • one year ago
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    the equation = to

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