Solve the system of equations
3x+3y-6z=9
5x+y-z=6
-x-y+2z=2

Which of the following expressions is equal to 2x^2+8

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?