A teacher prepares 8 assignments for her 2 students. How many different ways can the assignments be assigned if and only if one assignment assigned to each student?

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Una caja de galletas contiene 16 paquetes y cada una de estas tiene 12 galletas y se quieren repartir entre 6 niños ¿de cuantas galletas le toca a cada niño?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section