Can someone verify if this is correct? Quadrilateral OPQR is inscribed in circle N as shown below. Which of the following could be used to calculate the measure of angle OPQ?

If benito is selecting samples of five values from the table, which row will result in the greatest mean? row 1 row 2 row 3 row 4

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 are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2