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andrea408

  • one year ago

geometry question please help !!!!!!! this is my last one

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  1. andrea408
    • one year ago
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    |dw:1360020584560:dw|

  2. karatechopper
    • one year ago
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    Ok, so if AD is the same as CD..what should AD be?

  3. andrea408
    • one year ago
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    4 ft?

  4. karatechopper
    • one year ago
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    Correct! Now do you know what the formula for finding the are of a triangle is?

  5. andrea408
    • one year ago
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    b * h?

  6. karatechopper
    • one year ago
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    Close! (B x H)1/2

  7. andrea408
    • one year ago
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    oh yea i forgot the half

  8. karatechopper
    • one year ago
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    :) Its ok Ok, so what do you think the base is?

  9. andrea408
    • one year ago
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    4 *4 ? or add ?

  10. karatechopper
    • one year ago
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    U are gonna add it..soo whats it gonna be?

  11. andrea408
    • one year ago
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    8

  12. karatechopper
    • one year ago
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    Good!

  13. karatechopper
    • one year ago
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    Now whats the height?

  14. andrea408
    • one year ago
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    7

  15. andrea408
    • one year ago
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    8*7?

  16. karatechopper
    • one year ago
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    Good..now put that in the formula

  17. karatechopper
    • one year ago
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    Yes!

  18. karatechopper
    • one year ago
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    But don't forget the 1/2 in the formula

  19. andrea408
    • one year ago
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    its 28 right ?

  20. karatechopper
    • one year ago
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    Yep!!! \[28 ft ^{2}\]

  21. andrea408
    • one year ago
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    thank you :)

  22. andrea408
    • one year ago
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    it said it was wrong ? :(

  23. karatechopper
    • one year ago
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    You're welcome! :)

  24. karatechopper
    • one year ago
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    What?!?

  25. andrea408
    • one year ago
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    yeah i dont know what went wrong

  26. karatechopper
    • one year ago
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    Oh..I see..

  27. karatechopper
    • one year ago
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    I know..

  28. karatechopper
    • one year ago
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    I hope this wasn't a quiz for a big grade right!?

  29. karatechopper
    • one year ago
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    Cuz, I see what went wrong..and I am really sorry!!

  30. andrea408
    • one year ago
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    well i have 5 questions to answer and i have to get a perfect score in order to go on my next lesson. its okay can you help me on my next one ?

  31. andrea408
    • one year ago
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    whats that?

  32. karatechopper
    • one year ago
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    Sure!

  33. karatechopper
    • one year ago
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    Lol nvm ahha

  34. karatechopper
    • one year ago
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    Just post your next question

  35. andrea408
    • one year ago
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    |dw:1360021622659:dw|

  36. andrea408
    • one year ago
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    Is it the same way you told me>?

  37. karatechopper
    • one year ago
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    Yup!

  38. andrea408
    • one year ago
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    |dw:1360021756423:dw|

  39. andrea408
    • one year ago
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    what is the area of this parallelogram

  40. karatechopper
    • one year ago
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    I think its just B x H

  41. andrea408
    • one year ago
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    so 6 + 4 ? 10 and times 20 ?

  42. karatechopper
    • one year ago
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    Oh wait..no..

  43. karatechopper
    • one year ago
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    Ok..you see how there this a small triangle in the parallelogram?

  44. andrea408
    • one year ago
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    yes

  45. karatechopper
    • one year ago
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    Ok. That A stands for Area. And that A is in the triangle. So its saying that the area of the triangle is 20. So we need to find the height of the triangle before trying to find the are of the paralellogram.

  46. karatechopper
    • one year ago
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    So..whats the base of the triangle?

  47. andrea408
    • one year ago
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    its 4 ft

  48. karatechopper
    • one year ago
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    Good. Now do you have any idea of how to find the height of the triangle?

  49. andrea408
    • one year ago
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    no i dont, how do you find it ?

  50. karatechopper
    • one year ago
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    Ok..well one way is that you can put the info you have in the area of a triangle formula and solve fore the height..it would look like this.. (4 x H)1/2=20 SOLVE IT! The 4 is for the Base..the 20 is for the area..

  51. andrea408
    • one year ago
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    how do you solve ?

  52. andrea408
    • one year ago
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    is it 10 ?

  53. andrea408
    • one year ago
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    wait its 125 !

  54. karatechopper
    • one year ago
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    The H is 10

  55. andrea408
    • one year ago
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    oh i was right the first time then

  56. karatechopper
    • one year ago
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    Yeh! Now that you know what the height is, you can now find the area of the parallelogram

  57. karatechopper
    • one year ago
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    Its going to be the basic formula B x H

  58. andrea408
    • one year ago
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    so 4* 10 ?

  59. karatechopper
    • one year ago
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    no..try again..

  60. andrea408
    • one year ago
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    10 times 10 ?

  61. karatechopper
    • one year ago
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    yes

  62. andrea408
    • one year ago
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    the answer is 100 !?

  63. andrea408
    • one year ago
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    |dw:1360023228622:dw|

  64. Directrix
    • one year ago
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    The area of a triangle is (1/2) its base length times its corresponding height. If the base is 4.5 and the height 4, then the Area is (1/2)*(4.5)*4 Area = ?

  65. andrea408
    • one year ago
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    the area would be 810 ?

  66. andrea408
    • one year ago
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    oh nvm its 9

  67. Directrix
    • one year ago
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    That is correct (9).

  68. andrea408
    • one year ago
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    no its wrong :(

  69. Directrix
    • one year ago
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    Then, please check the diagram. The base is marked 4.5 and the height 4. That would be 9 square miles. Check to see if the diagram is marked correctly. @andrea408

  70. andrea408
    • one year ago
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    |dw:1360024796872:dw|

  71. andrea408
    • one year ago
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    whats the area of this trapazoid ?

  72. Directrix
    • one year ago
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    The area of a rectangle is the product of the length and the width. The area of a triangle is (1/2)b * h. So, ... |dw:1360024949464:dw|

  73. Directrix
    • one year ago
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    Area of trapezoid is (1/2) * 6 * 14 + 13 * 14 A = ?

  74. andrea408
    • one year ago
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    is it 133?

  75. Directrix
    • one year ago
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    Try again --> (1/2) * 6 * 14 + 13 * 14 --------------- Do one-half of the product of 6 and 14. Add that answer to the product of 13 and 14 and post what you get.

  76. andrea408
    • one year ago
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    224 ?

  77. andrea408
    • one year ago
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    or 48?

  78. Directrix
    • one year ago
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    224 ? --> I agree.

  79. andrea408
    • one year ago
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    so the area of the trapazoid is 224 ?

  80. Directrix
    • one year ago
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    That is what I got.

  81. andrea408
    • one year ago
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    are you sure?

  82. Directrix
    • one year ago
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    What are the options?

  83. andrea408
    • one year ago
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    i dont have options . i just put in the answer and click done to see if its correct but im scared to click

  84. Directrix
    • one year ago
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    If the picture is correctly drawn and labeled, I am certain that the answer is 224 square feet.

  85. Directrix
    • one year ago
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    @andrea408

  86. andrea408
    • one year ago
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    |dw:1360025794352:dw|

  87. andrea408
    • one year ago
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    @needmathhelp7 can you help me please?

  88. needmathhelp7
    • one year ago
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    I'm so sorry, honey I wish I could, but I'm bad at this myself! Lol Good luck!! :) @andrea408 Try seeing @jim_thompson5910 @phi @JamesJ or @Luis_Rivera maybe they can help!

  89. andrea408
    • one year ago
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    ok thanks

  90. andrea408
    • one year ago
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    @jim_thompson5910 can you help me please?

  91. jim_thompson5910
    • one year ago
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    the base is 4.5, the height is 3 so the area is just base * height = 4.5 * 3 = 13.5 square miles

  92. jim_thompson5910
    • one year ago
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    In general Area of Parallelogram: A = B*H B = base H = height

  93. andrea408
    • one year ago
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    so the area of ABDF is just 13.5 ?

  94. jim_thompson5910
    • one year ago
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    yep 13.5 square miles

  95. andrea408
    • one year ago
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    are you sure?

  96. jim_thompson5910
    • one year ago
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    yes

  97. andrea408
    • one year ago
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    thank you !

  98. jim_thompson5910
    • one year ago
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    np

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