during a gym class, jose jogged and edwin walked at constant rates around a circular 1/4 mile track. at the end of 30 minutes, how many more times had edwin completed the track then jose.​

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?