Civil engineers are designing a section of road that is going to dip - Algebra 2

label Algebra
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Civil engineers are designing a section of road that is going to dip below sea level. The road's curve can be modeled by the equation y = 0.00005x^2 - 0.06x, where x is the horizontal distance in feet between the points where the road is at sea level and y is the elevation. The engineers want to put stop signs at the locations where the elevation of the road is equal to sea level. At what horizontal distances will they place the stop signs?

May 8th, 2015

y = 0.00005x^2 - 0.06x

You need to solve this equation as a quadratic equation

0.00005x^2 - 0.06x=0

x(0.00005x - 0.06)=0

x1=0 ft      x2=1200ft

y1=0 ft      y2=0 ft

So, they will place the signs at points (0, 0) and (1200, 0)

May 8th, 2015

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May 8th, 2015
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