Explain how you can compare the size of a product to the size of a factor when multiplying fractions without actually doing multiplication including model

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

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?

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?