The sum and product of zeroes are 4 and 1 respectively then the quadratic equation is A. x² - 4x + 1 =0
B. x + 1=0
C 4x² +x +1 =0
D . x² + 7x+1 =0

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

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%

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?