<h3>Question: Explain why the researchers used data from ten trails and averaged them, rather than data from a single trail.</h3>
Answer : Because in all experiments there are several factors that can affect the result. Repeating the experiment several times can vary the factors and compensate the measurement errors. Therefore, the average of the results is calculated to find the result that is closest to the set of all the results, being more reliable than a single result of an individual experiment.
518.4 is your answer i believe. you would multiply how much money he gets per hour by the number of hours he worked that week (so 46 hours) to get 518.4
For a number to be rational by definition, a fractional representation of the number must exist. So N = n/m is rational if n and m are integers. Since it's given in fractional form it's rational by definition. Hence false.