Please show the work and use the correct energy formula A kid on a bike that is sitting at the top of a hill that is 21m high. The kid has a mass of 1.5kg and the bike has a mass of 2.5kg. What is the potential energy of the kid sitting on the bike?

What are “like terms”? why can we only add like terms?

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?