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KE8717504

  • 3 years ago

A sailboat sail is triangular with a height 10ft greater than it's base. If the sails area is 72 sq ft, find it's base and height.

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  1. completeidiot
    • 3 years ago
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    did you try drawing a picture?

  2. Algebraic!
    • 3 years ago
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    what's the area of a triangle in terms of height and base?

  3. completeidiot
    • 3 years ago
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    actually you dont really need a picture A=1/2b*h

  4. KE8717504
    • 3 years ago
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    Ok so what's next?

  5. Algebraic!
    • 3 years ago
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    so you have an equation for b and h

  6. Algebraic!
    • 3 years ago
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    you need one more equation, since you have two unknowns.

  7. KE8717504
    • 3 years ago
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    Ok..

  8. Algebraic!
    • 3 years ago
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    "a height 10ft greater than it's base." try to write an equation based on that statement

  9. KE8717504
    • 3 years ago
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    I have no clue lol

  10. KE8717504
    • 3 years ago
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    i get lost on these problems

  11. Algebraic!
    • 3 years ago
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    if b is 6 what is h?

  12. KE8717504
    • 3 years ago
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    10

  13. Algebraic!
    • 3 years ago
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    because 10 is 10 more than 6?

  14. KE8717504
    • 3 years ago
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    yes

  15. Algebraic!
    • 3 years ago
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    what's 6 plus 10

  16. KE8717504
    • 3 years ago
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    16

  17. Algebraic!
    • 3 years ago
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    so 16 is 10 more than 6

  18. Algebraic!
    • 3 years ago
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    if b=6 h=16

  19. Algebraic!
    • 3 years ago
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    if b=7 h=?

  20. KE8717504
    • 3 years ago
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    16

  21. KE8717504
    • 3 years ago
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    ?

  22. Algebraic!
    • 3 years ago
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    because 16 is 10 more than 7...

  23. KE8717504
    • 3 years ago
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    so my answer is 7, 16

  24. Algebraic!
    • 3 years ago
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    this was fun.

  25. KE8717504
    • 3 years ago
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    the computer again said that was wrong?

  26. KE8717504
    • 3 years ago
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    ??

  27. Denebel
    • 3 years ago
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    |dw:1347073516029:dw|

  28. KE8717504
    • 3 years ago
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    so what is my answer?

  29. KE8717504
    • 3 years ago
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    for the base and heig

  30. KE8717504
    • 3 years ago
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    t?

  31. Denebel
    • 3 years ago
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    You have to solve for x.

  32. KE8717504
    • 3 years ago
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    X(x+10) / 2??

  33. KE8717504
    • 3 years ago
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    now?

  34. Agent47
    • 3 years ago
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    Good job Denebel. KE, if you can't follow simple instructions, nobody will help you. Nobody is just going to post the answer.

  35. Denebel
    • 3 years ago
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    \[72=\frac{ 1 }{ 2 }x(x+h)\] Do you know how to solve for x?

  36. KE8717504
    • 3 years ago
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    Yes but it comes out to be like a square root.. I'm not stupid or anything

  37. Algebraic!
    • 3 years ago
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    prove it.

  38. KE8717504
    • 3 years ago
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    prove what?

  39. Algebraic!
    • 3 years ago
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    wow.

  40. KE8717504
    • 3 years ago
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    Um excuse me Mrs. wrong answer giver Algebraic I can block u also...

  41. Denebel
    • 3 years ago
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    Ok, what did you do so far?

  42. KE8717504
    • 3 years ago
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    when I divided the equation u told me to divide i got 2 big square roots

  43. Denebel
    • 3 years ago
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    ? Can you show me the steps? Draw or write it out.

  44. KE8717504
    • 3 years ago
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    I'm not even sure if i worked it right? I put it in my calcuator

  45. Denebel
    • 3 years ago
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    If you don't mind me asking, what math are you taking?

  46. KE8717504
    • 3 years ago
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    Intermediate.

  47. Denebel
    • 3 years ago
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    Is there a particular subject? On the cover of your textbook? Have you learned about distribution?

  48. Denebel
    • 3 years ago
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    Also, how did you type x(x+10) in your calculator...

  49. KE8717504
    • 3 years ago
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    Have u ever used a graphing calucator?? u can type that in to that

  50. completeidiot
    • 3 years ago
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    what did you get for a base?

  51. KE8717504
    • 3 years ago
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    Yes the particular subject is intermediate math i believe i said that

  52. KE8717504
    • 3 years ago
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    I don't even know now people are making me mad on here tonight

  53. completeidiot
    • 3 years ago
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    well assuming you have a graphing calculator i put down (1/2)(x(x+10))-72 find when y=0 and got x=8

  54. KE8717504
    • 3 years ago
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    ok

  55. completeidiot
    • 3 years ago
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    sorry for above shouldve check this sooner

  56. KE8717504
    • 3 years ago
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    huh?

  57. Denebel
    • 3 years ago
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    |dw:1347075231860:dw|

  58. KE8717504
    • 3 years ago
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    duh ok i already knew that.... ...... but is that my base or height????

  59. Denebel
    • 3 years ago
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    It's nothing, you have to solve for x first. It's just an equation so you find your base and height.

  60. KE8717504
    • 3 years ago
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    Ok did i just not solve this same one though?

  61. Denebel
    • 3 years ago
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    Which other equation did you solve?

  62. KE8717504
    • 3 years ago
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    I thought i just solved this one

  63. KE8717504
    • 3 years ago
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    x=-18,8 ???? is that right

  64. completeidiot
    • 3 years ago
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    well the base cant be negative so just x=8

  65. Denebel
    • 3 years ago
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    Measurements of an object can be negative. |dw:1347075538826:dw|

  66. KE8717504
    • 3 years ago
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    so my base is 8 and my height is -18???

  67. Algebraic!
    • 3 years ago
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    so much fail.

  68. KE8717504
    • 3 years ago
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    what?

  69. Denebel
    • 3 years ago
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    Oops typo there, I mean CAN'T

  70. KE8717504
    • 3 years ago
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    Denebel u have me lost...

  71. completeidiot
    • 3 years ago
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    the height was 10 more than the base if the base if 8 8+10 =18 case closed

  72. KE8717504
    • 3 years ago
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    so my base is 18 and my height is 10?

  73. Denebel
    • 3 years ago
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    @completeidiot Also has to satisfy A=72

  74. completeidiot
    • 3 years ago
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    no... base is 8 height is 18...... 8*18=144 144/2=72 GAHHHHHHHH

  75. Denebel
    • 3 years ago
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    Oops sorry My brain is wacked. I typed it in my calculator wrong.

  76. Denebel
    • 3 years ago
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    LOL Yes @KE8717504 , completeidiot is correct

  77. KE8717504
    • 3 years ago
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    THANK YOU SO MUCH @completeidiot

  78. KE8717504
    • 3 years ago
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    @Denebel i'm starting to wonder if u know what ur doing.. and u are very confusing.

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