En un poliedro, un ángulo poliedro es la región del espacio comprendida entre todas las caras que concurren en un mismo vértice. ¿Cuál de estos ángulos poliedros no es posible?

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Average acceleration: i have no idea how to do this.

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.