W naczyniu znajduje się 4% roztworu soli jeśli do sypiemy do tego roztworu 6 g soli to otrzymamy roztwór 5% ile 4% roztworu jest w naczyniu

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)