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6 June, 03:59

One of the parking lot lights at a hospital has a motion detector on it, and the equation (x+10) 2 + (y-8) 2=16 describes the boundary within which motion can be sensed. What is the greatest distance, in feet, a person could be from the parking lot light and be detected?

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  1. 6 June, 04:10
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    The correct answer is 4ft

    because the radius of that circle

    (x+10) ^2 + (y-8) ^2 = 4^2

    is 4
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