Which statement is true regarding the diagram of circle P?
The sum of y and z must be 2x.
The sum of y and z must be x.
The difference of z and y must be 2x.
The difference of z and y must be x.

Find x & pleeeeaaaassseeee me !

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%

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?