anonymous
  • anonymous
The pilot of a helicopter plans to release a bucket of water on a forest fire. The height y in feet of the water t seconds after its release is modeled by y = -16t2 - 2t + 400. The horizontal distance x in feet between the water and its point of release is modeled by x = 91t. To the nearest foot, at what horizontal distance from the target should the pilot begin releasing the water? ____ ft Use a number only.
Mathematics
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anonymous
  • anonymous
The pilot of a helicopter plans to release a bucket of water on a forest fire. The height y in feet of the water t seconds after its release is modeled by y = -16t2 - 2t + 400. The horizontal distance x in feet between the water and its point of release is modeled by x = 91t. To the nearest foot, at what horizontal distance from the target should the pilot begin releasing the water? ____ ft Use a number only.
Mathematics
jamiebookeater
  • jamiebookeater
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carolinar7
  • carolinar7
carolinar7
  • carolinar7
We should use substitution
carolinar7
  • carolinar7

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carolinar7
  • carolinar7
wait no im confused on this one
andrearchat
  • andrearchat
t = -5.06 and t = 4.93... substitute t = 4.93 sec.. so X = 91t = 91 (4.93) = 448.63 ft .. is that right ??
carolinar7
  • carolinar7
Im not sure
carolinar7
  • carolinar7
Ya it is
carolinar7
  • carolinar7
-5.06 does not make sense
carolinar7
  • carolinar7
so its 4.93
andrearchat
  • andrearchat
i think

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