staples sell 15 boxes of pens for every 4 boxes of pencils. if they sold 105 pens, how many pencils did they sell?

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?

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

Find the ratios of the corresponding sides