There is a proportional relationship between your distance from a thunderstorm and the amount of time that elapses between the time you see lightning and the time you hear thunder. if there are 9 seconds between ligtning and thunder, the storm is about 3 kilometers away. if you double the amount of time between lightning and thunder, do you think the distance in kilometers also doubles?

Acoin is tossed twice. let e e be the event "the first toss shows heads" and f f the event "the second toss shows heads". (a) are the events e e and f f independent? input yes or no here: yes (b) find the probability of showing heads on both toss. input your answer here: preview

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?