The variable x and y vary directly. Write an equation that relates x and y. Then find y when x = 12. x = 4, y = 8

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16