Apair of shoes costs $30.99 and the sales tax is 5% . use the formula c=p+rp to find the total cost of the shoes

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%

Ten times the square of a non-zero number is eqaul to ninety times the number

Given the median qr and trapezoid mnpo what is the value of x?