The mean weight of salmon at a fishery is 15.8 pounds with a standard deviation of 2.4 pounds. A researcher records the weight of the following salmon: 14.5lbs, 16.8lbs, 15lbs, 16.4lbs, and 15.9lbs. Find the sample mean, sample standard deviation, population mean, and the population standard deviation.
Make sure to answer all four and show work.

A(t)=728(1+0.04)^t how much money did aditya originally invest

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?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?