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21 August, 15:02

The equation s = 3√5x can be used to estimate the speed, of a car in miles per hour, given the length in feet, x, of the tire marks it leaves on the ground. A car traveling 90 miles per hour came to a sudden stop. According to the equation, how long would the tire marks be for this car?

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  1. 21 August, 15:04
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    Answer:180ft

    Step-by-step explanation:

    s = 3√5x

    S=90

    So 90 = 3√5x

    30 = 3√5x

    Square both sides

    900 = 5x

    x = 900/5 = 180 ft
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