Maria rolls a pair of dice. what is the probability that she obtains a sum that is either a mutiple of 3 or a mutiple of 4

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

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

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%