What is the solution to the system of equations? 2x+3y=26
3x+5y=40

1. X=10, y=2

2. X=10, y=-2

3. X=-10, y=-2

4. X=-10, y=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%

The length of the line segment ac is 8x-9 what is the value of x

Roderick wants to draw a circle for which the numerical value of the circumference is greater than the value of the area.which lengths could he use for the radius? check all that apply