Roland and sam wash dogs to make extra money. roland can wash all of the dogs in 4 hours. sam can wash all of the dogs in 3 hours. how long will it take them to wash the dogs if they work together?

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?