A community for students.
Here's the question you clicked on:
 0 viewing
ladiesman217
 3 years ago
i give medals and fans
ladiesman217
 3 years ago
i give medals and fans

This Question is Closed

ladiesman217
 3 years ago
Best ResponseYou've already chosen the best response.0If a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it take the baseball to hit the ground? Use the equation \[h=16t ^{2}+64t+4\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0baseball hits the ground when \(h=0\).

ladiesman217
 3 years ago
Best ResponseYou've already chosen the best response.0@Shadowys @UnkleRhaukus @TSwizzle can you help me please

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\(h=16t^2 +64t +4\) when h=0,(the ball hits the ground) \(0=16t^2 +64t +4\) use the general formula. what did u get?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0you need to solve the quadratic equation since h=0 so 16t^+64t+4=0 or 16t^264t4=0 use quadratic formula with a=16 b=64 c=4 you will get two roots t=4 sec t=0.6 but time cannot be negative so neglect the negative value t=4 sec is the required time .

ladiesman217
 3 years ago
Best ResponseYou've already chosen the best response.0\[\frac{ 64\sqrt{64^{2}+16*4} }{ 2*16 }\] \[\frac{ 64\sqrt{64^{2}64} }{ 32 }\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0it should be +64 outside the root because b=64 and there is minus in the formula too .

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0note: it's \(64 \pm \sqrt{64^2  (4)(16)(4)}\) up there.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0correct formula is \[\Large =\frac{b \pm \sqrt{b^24ac}}{2a}\]

ladiesman217
 3 years ago
Best ResponseYou've already chosen the best response.0\[\frac{ 64\sqrt{64^{2}+256} }{32}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0you miseed plus minus sign :)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0yup! simplify and you're done (i guess the editor don't have it. the latex is \pm
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.