Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

cdelomas

  • 2 years ago

h(t)=-15t^2+105t+10,0<t<10. find the times when the tshirt will reach a fan 190 feet abouve ground level. The tshirt will reach the fan at how many seconds.

  • This Question is Closed
  1. cdelomas
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can someone help me please

  2. cwrw238
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    190 =-15t^2+105t+10 rearranging 15t^2 - 105t + 180 = 0 you need to solve this equation for t

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

    how do I do that

  4. cwrw238
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok first take out the common factor 15 to simplify the problem: 15(t^2 -7t + 12) = 0 now we have to solve the trinomial in the parentheses we need 2 numbers whose product id +12 and whose sum is -7 these are -4 and -3 so it factors to ( t - 4)(t - 3) = 0 ginig t = 3 and t = 4 so your required times are 3 seconds and 4 seconds

  5. cdelomas
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the tshirt will reach the fan at 3 seconds

  6. cwrw238
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yea and again at 4 seconds

  7. cwrw238
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    unless it gets sucked into the fan in 3 seconds!

  8. cwrw238
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    if so its just as well its a tshirt

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.