Two remote-controlled race cars travel on a straight race car track. One travels at a constant speed and has a head start. Find an approximate solution to the system.
( , ) ( , ) and ( , )

What does the solution mean in the context of the situation?

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.

What are the triple angle formulas? is it related to double angle identities?