How is completing the square beneficial ? Edge 2020 key words

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1

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.)