A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

EXAMS NEXT WEEK! Help with Review! Giving Points! The height of a javelin in feet is modeled by h(t)=-16t^2+79t+5, where t is the time in seconds after the javelin is thrown. Determine the maximum height of the javelin. After how many seconds does the javelin reach its maximum height? How many seconds does it take for the javelin to hit the ground? 1. Determine the maximum height of the javelin. 2. After how many seconds does the javelin reach its maximum height? 3. How many seconds does it take for the javelin to hit the ground?

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

    rip english

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

    im rewriting that

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

    thats what i did and i got 79/32 or 2.46875

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

    ok to find the x value in which you have your maximum y value use the equation -b/2a in which we pull the terms from the form of ax^2+bx+c

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

    ok so you found 2.46 for your x value?

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

    considering your x value is actually time i think at your maximum height would be the x value in which you found your maximum height. I seriously doubt they want us to use kinematics equations.

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

    i think at your maximum height would be the x value in which you find the time it took to reach maximum height.

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

    so what your saying is that 2.47 is my maximum height? if so then what would be the time?

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

    yes i believe so

  10. 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.