Part of the proceeds from a garage sale was $510 worth of $10 and $20 bills. if there were only 6 more $10 bills than $20, find the number for each denomination

Why do interests rates on loans to be lower in a weak economy than in a strong one

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?