Over a 24-hour period, brown bears counted
840 salmon swimming upstream, and they
safely assumed that they only counted 30% of
the total number of fish going by. The salmon-
spawning haven along Copper River measures
approximately 90,000 cubic meters of water.
Given that the haven was empty before this
week, that the salmon swim upstream at a
constant rate, and that once they reach the
haven, the salmon hang out there indefinitely,
what will the population density of salmon in
the Copper River spawning haven be after one
week (to the nearest thousandth fish/m3)?
(A) 0.009 fish/m3
(B) 0.031 fish/m3
(C) 0.093 fish/m3
(D) 0.218 fish/m3

Which equation represents the partial sum of the geometric series?

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

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?