Felipe rides a bus from San Antonio to Austin. The bus makes the 150 kilometer trip in two hours. What was the average speed in kilometers per hour of the bus trip? *

Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b. hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.