Carmita bought 20 pizzas for a party, An hour after the party started, 2/7 of the pizzas had been eaten. How many pizzas had been eaten?

17 in long 1.3 ft wide and 8in high what is the volume

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.