On a test that has a normal distribution, a score of 64 falls one standard deviation below the mean, and a score of 70 falls one standard deviation above the mean.
Determine the mean of this test.

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

According to the national center for health statistics, in 1990, 28 % of babies in the united states were born to parents who were not married. throughout the 1990s, this increased by approximately 0.6 % per year. if this trend continues, in which year will 52 % of babies be born out of wedlock? in__52 % of babies will be born out of wedlock