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Mathematics, 22.10.2019 22:30 Poohpooh8548
For this year's fundraiser, students at a certain school who sell at least 75 magazine subscriptions win a prize. if the fourth-grade students at this school sell an average (arithmetic mean) of 47 subscriptions per student, the sales are normally distributed, and have a standard deviation of 14, then approximately what percent of the fourth-grade students receive a prize? a) 1.5 b) 2.5 c) 2 d) 0 e) answer can't be found
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Mathematics, 21.06.2019 19:20, alexcarrasco5903
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?
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For this year's fundraiser, students at a certain school who sell at least 75 magazine subscriptions...
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