Use the quadratic formula to solve the quadratic equation x2 − 8x − 4 = 0.

Your company will replace the asphalt roofs on all the buildings at the factory complex shown below. the buildings have flat roofs. you charge according to the total roof area. what is this area, in square yards?

Atruck travels from a factory to a gas station in 4 minutes. it stops at the gas station for 3 minutes. the truck then returns to the factory in 3 minutes. which graph best represents the distance, y, in miles, of the truck from the factory for a certain amount of time, x, in minutes?

Abag contains 5 yellow, 6 red, and 4 green marbles. two marbles are drawn. the first is replaced before the second is drawn. a random variable assigns the number of green marbles to each outcome. calculate the expected value of the random variable. a 0.76 c. 0.27 b. 1.07 d. 0.53