A bag contains 10 counters. Three are red and the rest are blue. One counter is selected at random, replaced and then a second counter is selected. Complete the
tree diagram to show all possibilities for the two counters selected.

What is the probability that you get 2 blues?

What is the probability that you get different colours?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i