In a survey that asked about 75 people about their fitness schedules, 50 of the respondents said they spent an average of 45 minutes a day exercising. The rest said they spent an average of 30 minutes a day exercising.

What is the average time spent exercising by all the respondents?

A. 42 minutes

B. 33 minutes

C. 38 minutes

D. 40 minutes

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.

An object in geometry with no width, length or height is a(n):

Aiko jumped rope for 20 min and stopped at 8: 05 when did she start