If each of the smaller squares have sides c centimeters long, write an expression for the area of the whole tile, and find the area of the tile if the length of the squares is 2.5 centimeters

Which is an equation for the nth terms of the sequence 12,15,18,21

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%