Use the number sentence to answer the question. 53 +26= 0 +53
Which value makes the number sentence true?
A. 26
B. 27
C. 53
D. 79

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Simplify the expression. -2/5(10+15m-20n)

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%