A community for students.
Here's the question you clicked on:
 0 viewing
zaynahf
 3 years ago
Quadratics word problem
zaynahf
 3 years ago
Quadratics word problem

This Question is Closed

zaynahf
 3 years ago
Best ResponseYou've already chosen the best response.0An arrow is shot upward from a platform 40 feet high with an initial velocity of 224 ft. per second. its height, h, in feet after t seconds is given by the equation: h= 16t^2 + 224t+40. At what times will the arrow be 824 feet above the ground?

zaynahf
 3 years ago
Best ResponseYou've already chosen the best response.0Am i supposed to plug in 824 for t?

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.0no, \(t\) is the time you are looking for you are supposed to replace \(h\) by 824 and solve for \(t\)

wio
 3 years ago
Best ResponseYou've already chosen the best response.2\[ \begin{array}{rcl} h(t) &=& 16t^2 + 224t+40 \\ 824 &=& 16t^2 + 224t+40 \\ 0 &=& 16t^2 + 224t+40824 \end{array} \] Quadratic formula.

zaynahf
 3 years ago
Best ResponseYou've already chosen the best response.0Ohh ok i see it now.. then you just factor, correct?

wio
 3 years ago
Best ResponseYou've already chosen the best response.2Ummm, you're solving for \(t\) here. You can factor or use quadratic formula or whatever method you want.
Ask your own question
Sign UpFind 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
 Engagement 19 Mad Hatter
 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.