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Mathematics, 21.05.2021 15:30 jb230

The Intensity of light (in foot-candes) varies inversely as the square of x. the distance in foot from the light source. The intensity of light 2 from the source is 90 foot-candies. How far away is the source if the intensity of light is 7 foot-candies?

The intensity of light is 7 foot candles when the distance from the light source is ? feet
(Round to two decimal places as needed)

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