Solve x^2 - x = 2 using the quadratic formula. show your work.

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

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?

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15