Mathsfun2023 Mathsfun2023
  • 24-12-2023
  • Mathematics
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On a Big-Dipper ride at a funfair, the height y metres of a carriage above the ground t seconds after the start is given by the formula y = 0.5t^2 - 3t+5. Between what times is the carriage at least 3 m above the ground

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