Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Selena2345

  • 3 years ago

Heather wanted to measure the effects of erosion on a mound of soil in her backyard. The area she measured was 9 inches in height. During a storm it eroded 1/8 every day for 8 days. Write an expression that can be used to find the height of the mound of soil after the storm and simplify the expression.

  • This Question is Closed
  1. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    originally: 9in every day (1/8)th gets eroded.. how much is left out? -> 7/8th end of day 1-> \(h_1=9\times{7\over8}\) end of day 2->\(h_2=h_1{7\over8}=9\times\left({7\over8}\right)^2\) and so on.. end of nth day-> \(h_n=9\times\left({7\over8}\right)^n\)

  2. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so how much would be left?

  3. Selena2345
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    63/8

  4. Selena2345
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    IS IT RIGHT electro kid

  5. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    it will be \(9\times\left({7\over8}\right)^8\)

  6. Selena2345
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3.092480242

  7. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yep

  8. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    how did you get 63/8?

  9. Selena2345
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i multipled 9*7/8

  10. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that is after the first day.. look at my elaboration.. after "n" number of days... \(h_n\)

  11. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the question asks you to obtain that expression!

  12. Selena2345
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    CAN YOU HELP ME WITH 9 WORD PROBLEMS PLEASE ?

  13. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    say whaaaat!! i needed to chill, so i did this one.. there are lots o' nice people over here... post em up, I am sure somebody would answer

  14. electrokid
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    :)

  15. Selena2345
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    NOBODY ANSWER PLEASE

  16. 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