Claire earned a score of 96 on Exam A that had a mean of 100 and a standard deviation of 10. She is about to take Exam B that has a mean of 600 and a standard deviation of 50. How well must Claire 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.

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.