Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ganeshie8

...

  • one year ago
  • one year ago

  • This Question is Closed
  1. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    • 10 months ago
  2. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    look at the model

    • 10 months ago
  3. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    its height is just 2 feet, whereas the actual ramp was 12feet.

    • 10 months ago
  4. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    so the model is 6 times smaller than the actual ramp

    • 10 months ago
  5. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    look at the grid now

    • 10 months ago
  6. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    can you tell me the length of JL ?

    • 10 months ago
  7. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    @mlb004 still there :)

    • 10 months ago
  8. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    yes sorry

    • 10 months ago
  9. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    np, take ur time :) see if u can find the length of JL

    • 10 months ago
  10. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Ok I am looking at the grid nd trying to figure it out.

    • 10 months ago
  11. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    if you see, both J and L are at same height (60)

    • 10 months ago
  12. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    J is on left side at 10 L is on right side at 34

    • 10 months ago
  13. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 10 months ago
  14. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    so length of JL = distance between JL= 34-10 = 24

    • 10 months ago
  15. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    ok

    • 10 months ago
  16. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    so we now knw two lengths of actual ramp. JK = 12 feet JL = 24 feet

    • 10 months ago
  17. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    yes ok

    • 10 months ago
  18. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    we need to figure out where R goes

    • 10 months ago
  19. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    ok

    • 10 months ago
  20. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    look at the ramps, JL of actual ramp is represented by PR in model, right ?

    • 10 months ago
  21. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    yes it is

    • 10 months ago
  22. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    now this is the key :- since the model is 6 times smaller than actual ramp, PR will also be 6 times smaller than JL

    • 10 months ago
  23. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    so, PR = JL/6 = 24/6 = 4

    • 10 months ago
  24. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes that makes sense

    • 10 months ago
  25. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    good :) so what does that mean ?

    • 10 months ago
  26. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    it means, we need to pick R such that it is 4 feet away from P

    • 10 months ago
  27. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    look at grid now

    • 10 months ago
  28. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    P is located at (30, 20)

    • 10 months ago
  29. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 10 months ago
  30. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    can we say R can be at (30+4, 20) = (34, 20)

    • 10 months ago
  31. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    ?

    • 10 months ago
  32. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 10 months ago
  33. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    thats it ! point R has to be at (34, 20)

    • 10 months ago
  34. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    And we explain this usuing reasoning because of all of the above notes?

    • 10 months ago
  35. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    you can compress it :-

    • 10 months ago
  36. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    ok

    • 10 months ago
  37. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    Since QP(2feet) in model is smaller than JK(12feet) in actual ramp by 12 times, all dimensions in model have to be smaller than actual ramp by 6 times. From the grid, length of JL = 24. JL is represented in model as PR. Since PR has to be 6 times smaller than JL. so PR = 24/6 = 4 feet. Since P is fixed in grid at (30, 20), R point which is 4feet from P can be at (30+4, 20) = (34, 20).

    • 10 months ago
  38. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    oh ok, thank you so much. :)

    • 10 months ago
  39. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    np :)

    • 10 months ago
  40. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    What is the sum of the first 12 terms in the Fibonacci Sequence? Term - 1,2,3,4,5,6,7,8,9 Febonacci Number - 1,1,2,3,5,8,13,21,34 Numberical number? _________

    • 10 months ago
  41. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    use this :- sum of first n numbers = (n+2)th numeber - 1

    • 10 months ago
  42. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    since you want to knw suermnsm of first 12 terms, you need to look for (12+2) = 14th number

    • 10 months ago
  43. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    ok

    • 10 months ago
  44. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    google and tell me, whats the 14th number in fibonacci sequence

    • 10 months ago
  45. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Ok, I am doing it now.

    • 10 months ago
  46. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    It is 377

    • 10 months ago
  47. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    correct! thats the 14th number. subtract 1 to get the sum of first 12 numbers

    • 10 months ago
  48. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    so 376 is the answer?

    • 10 months ago
  49. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    sum of first 12 numbers = (12+2)the number - 1 = 14th number - 1 = 377 - 1 = 376

    • 10 months ago
  50. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    yes thats the answer. you can confirm it by adding manually all 12 numbers !

    • 10 months ago
  51. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    So is the Fibonacci Sequence always the same?

    • 10 months ago
  52. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes

    • 10 months ago
  53. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Ok so if it asks what the 13th term in the Fibonacci Sequence is then it would be 233?

    • 10 months ago
  54. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    you're tossing, whether to call 233 ias 13th number or 14th number ?

    • 10 months ago
  55. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    It asked me : What is the 13th term in the Fibonacci Sequence?

    • 10 months ago
  56. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    That is a 2nd question, I got and understand the first question.

    • 10 months ago
  57. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    cuz if u start from 0,1 then 14th number wud be 233 if u start from 1,1 then 13th number wud be 233

    • 10 months ago
  58. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    You have posted this :- What is the sum of the first 12 terms in the Fibonacci Sequence? Term - 1,2,3,4,5,6,7,8,9 Febonacci Number - 1,1,2,3,5,8,13,21,34 Numberical number? _________

    • 10 months ago
  59. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    Is this what they gave you to use ?

    • 10 months ago
  60. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    My chart starts with 1 so I was saying the correct answer would be 233, correct?

    • 10 months ago
  61. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    here it starts from 1,1..

    • 10 months ago
  62. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    yes, if you start from 1,1, then, 13th number is 233

    • 10 months ago
  63. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes starts 1, 1, 2, 3, 5, 8, 13, 21, 34 and so on. Ok that is what I thought. And one more question please.

    • 10 months ago
  64. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    but actual fibonacci sequence starts from 0,1... but you should use what ur chart shows :)

    • 10 months ago
  65. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    yea sure

    • 10 months ago
  66. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Using the same chart starting at 1,1 What is the ratio between 14th and 13th terms in the Fibonacci sequence? Round your answer to five decimal places.

    • 10 months ago
  67. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    14th number : ? 13th number : ?

    • 10 months ago
  68. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    377 233

    • 10 months ago
  69. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    So you just subtract correct

    • 10 months ago
  70. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    ratio between 14th and 13th terms = \(\large \frac{377}{233}\)

    • 10 months ago
  71. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    ratio means division !

    • 10 months ago
  72. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    1.6180258

    • 10 months ago
  73. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    dont forget to round it to 5 decimal places

    • 10 months ago
  74. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Since it says round to 5 decimal places it would be 1.61803 is that correct?

    • 10 months ago
  75. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    correct

    • 10 months ago
  76. mlb004
    Best Response
    You've already chosen the best response.
    Medals 1

    Oh I did it. Thank you so much for explaining that, that actually helped me with 3 problems.

    • 10 months ago
  77. ganeshie8
    Best Response
    You've already chosen the best response.
    Medals 2

    np :) btw this 1.61803 is called Golden ratio. it was used in Greek architectures like parthenon building and all... u may google "Golden ratio" if u have interest u wil get to know cool things

    • 10 months ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.