Which shows the best use of the associative and commutative properties to make simplifying 3-5+9 - + 2 easier?
O
A. [2+ 3/4 +(-5)] + [(–2/4) +9]
B. [3/4+ (-2/4)] + [9+2+(-5)]
C. (3/4+9+(-5)] + [2+(-2/4)]
D. [ 3/4+ (-5)] + [9+(-2/4) + 2]

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%

What is the frequency of the sinusoidal graph?

00 points ! missy’s rotation maps point k(17, –12) to k’(12, 17). which describes the rotation? 270° counterclockwise rotation 90° counterclockwise rotation 90° clockwise rotation 180° rotation