A45 degree sector in a circle has an area of 43.2 centimeters squared. what is the area of the circle?

Use set buikder notation to represent the following set: {, -2, -1, 0}

Solve the triangle. a = 21°, c = 105°, c = 5

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?