Identify the property used in each step. 12.2 + 18.6 + -4.3 + (-18.6) 12.2 + -4.3 + 18.6 + (-18.6) = (property?) 12.2 + -4.3 + [18.6 + (-18.6)] = (property?) 12.2 + -4.3 + (0) = (property?) 12.2 + -4.3 7.9

Brady has a 20 year fixed rate mortgage for $215,500 with monthly payments of 1,305.89.the annual interest rate is 4%. what is the total cost of the principal and interest for this loan rounded to the nearest dollar

What are the soultion(s) to the quadratic equation 40- x^2=0

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%