The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. if two light sources, one four times as strong as the other, are placed 18 ft apart, how far away from the stronger light source should an object be placed on the line between the two sources so as to receive the least illumination? (round your answer to two decimal places.)

Which measure is equivalent to 110 ml? 0.0110 l 0.110 l 1.10 l 11,000 l

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)

Which of the following is another way to express the difference between -5 and 8?