If you spin the spinner 40 times, how many times can you expect to spin a 1?

What is the solution of the systems of equations? y=2/3x+3 x=-2

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

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?