Assume that a normal distribution of data has a mean of 15 and a standard deviation of 4. Use the empirical rule to find the percentage of values that lie above 19.

Simply 8x squared + 5(7x squared- x) - 2x =

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?

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost