A bag contains 4 black checkers and 8 red checkers. A checker is selected, kept out of the bag, and then another checker is selected. What is p(black, then red)?

Arectangular prism is 3 meters long, 6 meters wide, and has a height of 9 meters. what is its surface area?

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

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?