68% of the girls sang how many sang

Find two rational expressions that have the difference of 2-n/n-4

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?