Jillian and Tammy are considering a quadrilateral ABCD. Their task is to prove it is a square. Which method of proof is valid? Only Jillian's is valid, Only Tammy's is valid, Both are valid, Neither is valid

What is the quadric regression equation that fits these data

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

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%