The sum of deviations of n observations about 25 is 25 and the sum of deviations of the same n observations about 35 is −25. The mean of observations.​

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Asphere has a diameter of 10 in. what is the volume of the sphere?