The parking lot at safeway holds 1,000 vechiles. only 2/5 of the parking lot spots are reserved for small cars. when you went into safeway to buy groceries, there were 200 cars and some trucks in the parking lot. the parking lot was 3/4 full. how many trucks were in the lot?

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

What is the value of the product (3-2i)(3+2i)?

If the equation of a perpendicular bisector of a triangle is y = 2x + 7, what is the slope of the side that it is bisecting? explain how you know.