Assessment items item 13 the variables x and y vary directly. use the values to find the constant of proportionality, k. then write an equation that relates x and y . y=72; x=3 k= y=

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

With finding limits of multi variable !

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.