If x is non-zero rational number, then any number raised to the power zero is?​

In the rectangle below ac=30 units what is de

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Standard deviation of 19,29,21,22,23