anonymous
  • anonymous
The equation h=-16t²+56t models the height (h) in feet of a golf ball (t) seconds after it was hit what do i do next a find the values of t for which h=0 or B when the ball 40 ft above the ground?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
just plug in 0 and 40. then you'll find t
anonymous
  • anonymous
Sorry, plug those values for h. so 0=-16t^2+56t 40=-16t^2+56t
anonymous
  • anonymous
no i need to know what to do next i have two choices (A) find the values of t for which h=0 or (B) when the ball 40 ft above the ground?

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anonymous
  • anonymous
As suggested by ohcluap above, you get two quadratic equations Solving them will give you values of t Ignore negative value to t as time cannot be negative
anonymous
  • anonymous
Hope that clears it up..........

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