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Mathematics, 19.05.2020 15:22 idioticeinstein9021

The longitudinal section of a canyon makes a parabola shape that has the equation y=2(x-3)^2-18, where x and y are measured in kilometers. if the depth of the canyon is 18 kilometers, how long is the distance between the two sides at the top of the canyon? round your answer to the nearest tenth

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