What is the value of 3 in the system of equations below? 3x + y - z=5
2x -y-z= -3
2 + y +z = 9

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Taking algebra two apex courses and need with these questions