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lala365 Group Title

how do you find the length of CD?

  • one year ago
  • one year ago

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  1. VeritasVosLiberabit Group Title
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    use a ruler

    • one year ago
  2. VeritasVosLiberabit Group Title
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    ;)

    • one year ago
  3. lala365 Group Title
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    |dw:1354672985724:dw|

    • one year ago
  4. VeritasVosLiberabit Group Title
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    \[1x+4 = 4x\]

    • one year ago
  5. VeritasVosLiberabit Group Title
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    or is that a 2x

    • one year ago
  6. VeritasVosLiberabit Group Title
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    \[2x+4 = 4x\]

    • one year ago
  7. lala365 Group Title
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    that is a 2. srry

    • one year ago
  8. VeritasVosLiberabit Group Title
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    or Im sorry dont multiply by two, just solve for x and plugin the x in the equation for line CD and you have your answer.

    • one year ago
  9. lala365 Group Title
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    but how do i do that?

    • one year ago
  10. VeritasVosLiberabit Group Title
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    use the equation i gave you above.

    • one year ago
  11. VeritasVosLiberabit Group Title
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    you see that both line segments CD and AD are congruent, therefore you can set them equal to each other and solve for x.

    • one year ago
  12. lala365 Group Title
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    oh ok.so then i would multiply the 2x and 4x together?

    • one year ago
  13. VeritasVosLiberabit Group Title
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    no you will need to use the opposite operations in order to isolate x.

    • one year ago
  14. lala365 Group Title
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    so i divide? them

    • one year ago
  15. VeritasVosLiberabit Group Title
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    no not divide, try again.

    • one year ago
  16. VeritasVosLiberabit Group Title
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    you can also see it as 4+2x = 4x

    • one year ago
  17. lala365 Group Title
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    add them

    • one year ago
  18. lala365 Group Title
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    but how does that = 4x?

    • one year ago
  19. VeritasVosLiberabit Group Title
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    no not add look at you signs

    • one year ago
  20. VeritasVosLiberabit Group Title
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    the line segment CD = AD therefore they are equal.

    • one year ago
  21. VeritasVosLiberabit Group Title
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    the two lines you drew in the middle of them means they are the same length.

    • one year ago
  22. lala365 Group Title
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    so im not understanding. im so sorry. how do i solve the problem then?

    • one year ago
  23. VeritasVosLiberabit Group Title
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    How do you think you would attempt it? I've pretty much given you all of the information and even how to setup the problem.

    • one year ago
  24. lala365 Group Title
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    2x+4=4x . i multiply the 2x and 4x to get 8x?

    • one year ago
  25. VeritasVosLiberabit Group Title
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    no you need to subtract 2x from 4x

    • one year ago
  26. VeritasVosLiberabit Group Title
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    rearrange your equation to see this better. 4+2x = 4x

    • one year ago
  27. lala365 Group Title
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    so -2x?

    • one year ago
  28. VeritasVosLiberabit Group Title
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    write your whole equation.

    • one year ago
  29. lala365 Group Title
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    4+2x=4x

    • one year ago
  30. VeritasVosLiberabit Group Title
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    now subtract 2x from both sides of your equation.

    • one year ago
  31. VeritasVosLiberabit Group Title
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    and rewrite what you get.

    • one year ago
  32. lala365 Group Title
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    x+4=2x

    • one year ago
  33. VeritasVosLiberabit Group Title
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    not quite. that extra x on the left should not be there so it should be 4 = 2x

    • one year ago
  34. VeritasVosLiberabit Group Title
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    now one more step to solve for x

    • one year ago
  35. lala365 Group Title
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    i divide it by 2 right?

    • one year ago
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