The temperature fell from 0 degrees to15 1/2 degrees below 0 in 5 3/4 hours. wen tried to find the change in temperature per hour. her work is shown below. when she checked the answer by estimating, it did not make sense. what error did wen make? wen incorrectly converted a mixed number to an improper fraction. wen added the numerators and denominators instead of multiplying. wen did not take the reciprocal of the divisor. wen did not change the division problem to multiplication.

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.