A class consist of 14 girls and 16 boys. the mean weight of the girls is55kg while the mean weight of the boys is64kg. what is the mean weight for the whole class?

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Sioux co. replaced the roof on its existing building, therefore increasing the building's life by 10 years. the cost of the roof is considered a(n):