A scuba instructor wants to know the opinions of scuba divers about online scuba diving tests. She obtains a list of 900 scuba divers who have recently completed an online scuba diving course and e-mails a questionnaire to a randomly selected group of 175 of these divers. Only 54 of the questionnaires are returned. Identify the population and the sample in this study. The population is 175 and the sample is 54. The population is 900 and the sample is 175. The population is 900 and the sample is 54. The population is 54 and the sample is 900. The population is 175 and the sample is 900.

The graph of fx shown below has the same shape as the graph of gx = 3x^2 but is shifted down 2 units

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?