Find the circumference and area of a circle with a diameter of 12 cm. (Use the approximation of 3.14 for )

What is the quadric regression equation that fits these data

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

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line