Which of the following represents a rotation of △pqr, which has vertices p(−2,4), q(−3,−9), and r(4,−2), about the origin by 180°?p (2, −4) q (3, 9) r (−4, −2) p (2, −4) q (−9, −3) r (−4, −2) p (2, −4) q (3, 9) r (−4, 2) p (−4, −2) q (9, −3) r (2, 4)

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?