Half the sum of a number, x, and 15 is at most the sum of the opposite of twice the number 1.25. what is the range of possible values for the number? will be rewarded the brainiest answer plz by today

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%

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)