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| Math Central | Quandaries & Queries |
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Question from Malen: A hotel entrance makes a parabolic arch that can be represented by the quadratic function, y= -x^2-8x+24, where y is the height of the arch and x is the distance from wall to wall in the feet. What is the distance between the two walls of the arch. |
Hi Malen,
Draw a diagram!
What are the coordinates of $P?$ What are the coordinates of $Q?$ What is the distance between $P$ and $Q?$
Harley
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