anonymous
  • anonymous
Zoe can flip a pancake in the air and have it land in the frying pan. The motion of the pancake is represented by the equation y=-9x2+9.8x where x represents the number of seconds after Zoe flips the pancake in the air and y represents the height of the pancake above the frying pan. 1.)How long is the pancake in the air? 2.)At what time does the pancake stop going up and start coming down? 3.)How high is the pancake at the top of its flight?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
A. y=-9(x-.55)^2+2.67 therefore the pancake is in the hair for 55 seconds. (You had to change the equation into a standard form and x=.55) B. Divide .55 by 2=.28s C. 2.67 is the max height above the frying pan.
anonymous
  • anonymous
Thanks. But don't you mean the pancake was in the air for .55 seconds? not 55..
anonymous
  • anonymous
lol yea

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anonymous
  • anonymous
Now i just gotta figure out how to sketch a parabola of it.. -.-
amistre64
  • amistre64
its an upsode down bowl for starters :)
anonymous
  • anonymous
Lol that helps alot. maybe i'll just make it really vague...and hopefully my teacher doesnt care.. :D
amistre64
  • amistre64
its very close to the origin; the axis of symmetry is at 1/2 x and it y intercepts at y = 0 sooo yeah, wing it :)
anonymous
  • anonymous
Lol good answer!
anonymous
  • anonymous
Refer to the plot attachment
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