The illumination received for a light source varies inversely as the square of the distance from the source and directly as its candle power. At what distance from a 50-cp light would the illumination be one-half than one received at 20 ft from a 40-cp light? A 3/5 10/10 © 5/7 (D

The illumination received for a light source varies inversely as the square of the distance from the source and directly as its candle power. At what distance from a 50-cp light would the illumination be one-half than one received at 20 ft from a 40-cp light? A 3/5 10/10 © 5/7 (D

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter8: Introduction To Functions

Section: Chapter Questions

Problem 34CLR

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Question

The illumination received for a light source varies inversely as the square of the distance from the source and directly as its candle
power. At what distance from a 50-cp light would the illumination be one-half than one received at 20 ft from a 40-cp light?
A 3/5
10/10
© 5/7
(D

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