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 one year ago
Question 4 (Multiple Choice Worth 2 points)
If 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 = –16t2 + 64t + 4.
2 plus or minus square root of 17 end root over 2
quantity of 2 plus or minus square root of 17 all over 2
2 plus or minus 4 square root of 17
quantity of 16 plus or minus square root of 17 all over 2
 one year ago
Question 4 (Multiple Choice Worth 2 points) If 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 = –16t2 + 64t + 4. 2 plus or minus square root of 17 end root over 2 quantity of 2 plus or minus square root of 17 all over 2 2 plus or minus 4 square root of 17 quantity of 16 plus or minus square root of 17 all over 2

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that1chick
 one year ago
Best ResponseYou've already chosen the best response.0Here's what I have: h=16t^2+64+4 0=16t^2+64t+4 0=4(4t^216t1) x=b+sqrt(b^24ac)/2a x=(16)+sqrt(16^24(4)(1)/2(4) x=16+sqrt(2564(4)/8 x=16+sqrt(256+16)/8 x=16+sqrt(272)/8 and now I'm stuck... help?

that1chick
 one year ago
Best ResponseYou've already chosen the best response.0I think the next step would be: x=16+sqrt(17)*sqrt(16)/8 then x=16+4sqrt(17)/8 ??

Soumyadeep
 one year ago
Best ResponseYou've already chosen the best response.1\[16t^{2} + 64t + 4 = 0\] would give us \[t = 2  \frac{ \sqrt{17} }{ 2 }\] and \[t = \frac{ 1 }{ 2 }(4+\sqrt{17})\]

Soumyadeep
 one year ago
Best ResponseYou've already chosen the best response.1So its the second value!

that1chick
 one year ago
Best ResponseYou've already chosen the best response.0Can you show me how you got that? (:
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