If a ≤m b and b is regular, does that imply that a is a regular language? why or why not?

Technician a says that with self-adjusting clutch systems, the release bearing constantly rotates. technician b says that the ball bearing portion of the release bearing should be lubricated with high-temperature grease during routine maintenance. which technician is correct?

Choose the answers that best complete each sentence. on average,are more expensive than other kinds of postsecondary schools. the cost of room and board includes. to save money, some students attend auniversity in their home state.

Someone plzz me which of these defines a social search? a. asking a search engine a question that is answered by a real person on the other sideb. modifying search results based on popularity of a web pagec.modifying search results based on a ranking of a web page