Write the system of equations as a matrix equation AX=B, with A as the coefficient matrix of the system.
4x+2y-6z=1
-6x-y-z=7
-4x+7y+6z=1

X
?Y=?
Z

What is the inverse of the function f(x)=4x+8

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?