Athird-grade class has 16 girls and 15 boys. a fourth-grade class has 18 boys and 15 girls. when picking teams for pe, captains will make one selection from the fourth-grade class and one selection from the third-grade class before the other team picks. assuming everyone has an equally likely chance of being selected, what is the probability that the first captain will choose two boys on the first pick?

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?