Considerando la suma de los ángulos que coinciden en cada vértice, justifica por qué no se puede construir un poliedro en los siguientes casos: A) con 6 triángulos equiláteros en cada vértice. B) con 4 cuadros en cada vértice. C) con 4 pentágonos regulares en cada vértice. D) con hexágonos regulares o polígonos regulares demás lados.

Which expression is equivalent to? assume x > 0 and y > 0.

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

Find the equation using the point (4,8)