Final answer:
Mixed economies involve a mixture of market and command elements, with economies like the U.S. being market-oriented and others having varying degrees of government involvement.
Step-by-step explanation:
Mixed economies are characterized by a combination of different economic systems. Specifically, mixed economies involve a mixture of market and command elements. Market economies are those where economic decisions are decentralized and businesses operate based on demand and supply. Command economies, on the other hand, are characterized by government control over economic resources and decisions. In the real world, economies like that of the United States are positioned towards the market-oriented end of the spectrum, while other countries have varying degrees of government involvement in the economy, combining aspects of market interaction and government regulation.