Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

cdelomas

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

    can someone help me please

  2. cwrw238
    • 3 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
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    how do I do that

  4. cwrw238
    • 3 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
    • 3 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
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yea and again at 4 seconds

  7. cwrw238
    • 3 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
    • 3 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

Sign Up
Find more explanations on OpenStudy
Privacy Policy