1 2 of the fish in Elena's fish tank are guppies. 3 7 of the guppies are red. What fraction of the fish in Elena's tank are red guppies?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.