4. The illumination produced by a light source varies inversely as the square of the distance from the
source. The illumination of a light source at 5 meters is 70 candela. What is the illumination 12
meters from the source?

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Ответ:

Gabby7047

18.06.2021

Mathematics

I actually think the first one is 60 because 90 is about straight up and it is slightly tilted

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welcome

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4. The illumination produced by a light source varies inversely as the square of the distance from the source. The illumination of a light source at 5 meters is 70 candela. What is the illumination 12 meters from the source?