At a certain movie theater, the ratio of length to width of the movie screen is 16:9. If the length of the screen is 90 feet, then, to the nearest foot, how many feet is its whdth?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

An equation where variables are used to represent known values—function notation true or false

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?