what is the worst case and average case run-time of quicksort? briefly explain the situation when quicksort can result in worst case run-time?

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

The following graph shows the consumer price index (cpi) for a fictional country from 1970 to 1980? a.) 1976 - 1978b.) 1972 - 1974c.) 1974 - 1976d.) 1978 - 1980