Scarlett earned a score of 680 on Exam A that had a mean of 700 and a standard deviation of 40. She is about to take Exam B that has a mean of 39 and a standard deviation of 10. How well must Scarlett score on Exam B in order to do equivalently well as she did on Exam A? Assume that scores on each exam are normally distributed.

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?

How many solutions does the nonlinear system of equations graphed below have?