A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Sonji has $5.25 in nickels and dimes.The coin value can be modeled by the equation 0.10d + 0.05n = 5.25, where d represents the number of dimes and n represents the number of nickels. If Sonji has 21 dimes, how many nickels does she have? 35 42 63 105

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @10115658 Sorry for bugging you >.<

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    replace d with 21 and solve for n

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    n=63?

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good job

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Can you help with me with another? Lol

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sure

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A sequence is defined by the recursive function f(n + 1) = 1/3f(n). If f(3) = 9 , what is f(1) ?

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1437167181081:dw|

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I don't know where to start

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    are there choices?

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 3 27 81

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    looks like the sequence is you divide the number by 3 each time you increase the n value

  13. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    we want to work backward to get to f(1) so we should multiply by 3

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so f(3)=9

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    multiply that by 3 to get f(2)

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(2)=27

  17. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you!

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    that isn't the answer

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    we need to find f(1)

  20. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so we multiply 27 by 3 to get f(1)

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    this means the answer is 81

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what does f(1) represent.. if I may ask? Sorry..

  23. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is it a term?

  24. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    lets say f(n)=n+80

  25. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(1) means you replace the n in the equation with 1

  26. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    this gives f(1)=1+80

  27. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    does that make sense?

  28. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Why'd you use 1?

  29. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I must sound so stupid >.< I'm just trying to piece everything together

  30. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(1) means you replace every n with a 1

  31. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    f(2) means you replace every n with a 2

  32. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    etc...

  33. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh okay I get it now. May I ask another question?

  34. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sure

  35. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Wren recorded an outside temperature of –2°F at 8 a.m. When she checked the temperature again, it was 4°F at 12:00 p.m. If x represents the time and y represents the temperature in degrees Fahrenheit, what is the slope of the line through these two data points? –1.5 –0.5 0.5 1.5

  36. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what would the points be?

  37. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    remember x is represented by time and y is represented by temp

  38. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i'll give you the first point (8,-2)

  39. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what's the second point?

  40. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (12,4)?

  41. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yep

  42. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now how do you find slope?

  43. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Do I use the slope formula?

  44. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ya

  45. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1437168623581:dw|

  46. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good job

  47. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    My answer is 1.5 :)

  48. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yep

  49. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Another? When your tired of me just say so xD

  50. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    When a number is added to 1/5 of itself, the result is 24. The equation that models this problem is n +1/5 n = 24. What is the value n? n = 18 n = 20 n = 21 4/5 n = 23 4/5

  51. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry i was afk

  52. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It's okay :)

  53. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    first combine the n values

  54. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    n + n/5

  55. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    do you remember how to add fractions?

  56. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah

  57. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok, what did you get?

  58. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    20

  59. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well done

  60. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The soccer team is conducting a fundraiser selling long-sleeved T-shirts for $14 and short-sleeved T-shirts for $10. So far the team has sold less than $200 worth of the two types of T-shirts. Which inequality best represents x, the number of long-sleeved T-shirts they have sold, and y, the number of short-sleeved T-shirts they have sold? x + y < 200 x + y > 200 14x + 10y > 200 14x + 10y < 200

  61. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what do you think

  62. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    D?

  63. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yep

  64. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 more?

  65. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  66. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The simple interest formula is I = Prt, where I represents simple interest on an amount, P, for t years at a rate of r. The equation solved for P is P =l/rt . What is the amount of money, P, that will generate $40 in interest at a 10% interest rate over 5 years? $60 $80 $90 $100

  67. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    just plug in the numbers

  68. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is it b?

  69. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yep

  70. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thanks for your help! :)

  71. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.