a rectangular box is 9in wide, 11in tall, and 20in long. what is the diameter of the smallest circular opening through which the box will fit? if necessary, round to the nearest tenth of a centimeter. (this uses the pythagorean theorem)

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Write as a product: ac^2–ad+c^3–cd–bc^2+bd

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the asian project is successful and b be the event that the european project is successful. suppose that a and b are independent events with p(a) = 0.2 and p(b) = 0.8. (a) if the asian project is not successful, what is the probability that the european project is also not successful? (b) what is the probability that at least one of the two projects will be successful? (c) given that at least one of the two projects is successful, what is the probability that only the asian project is successful? (round your answer to three decimal places.)