Find the mean absolute deviation for the following data. 65, 90, 85, 70, 70, 95, 55.

Robert needs to cut 4 shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the length of the first shelf. The third shelf is 12 centimeters shorter than the first shelf.

How many clowns can fit inside a 2 meter car?

A number to the power of three is 144. What is the number?

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes with a standard deviation of 0.5 minutes.

A researcher receives 106 containers of oxygen. Of those containers, twenty of them have oxygen that is not ionized and the rest are ionized. Two samples are randomly selected, without replacement, from the lot.

Decide whether a discrete or continuous random variable is the best model for each of the following variables: (a) The time until a projectile returns to earth. (b) The number of times a transistor in a computer memory changes state in one operation.

The rquation of a citcle is x^2+y^2=16 what is the radius of the circle

BETH and Carley are selling candy bars to raise money for new cheer outfits. Beth has sold one less than twice the number of candy bars carely has sold. If they have 188 candy bars in all how many has Beth sold?

Mr. Smith has 28 sixth graders and 35 seventh graders. If he wants to break the two grades into identically sized groups without any students left over, how many students should be in a group

1. What is a perfect square? 2. What is the square root of 4x²? 3. What is the square root of 25? 4. Factor 4x² + 20x + 25.