Two high speed ferries leave at the same time from a city to go to the same island. The first ferry, the Cat, travels at 40 miles per hour. The second ferry, the bird travels at 30 miles per hour in how many hours will the two ferries be 30 miles apart

Three times the difference of federico’s age, and 4, increased by 7, is greater than 37. what are possible values of federico’s age?

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

The ratios of boys to girls on a soccer league is 2: 5. if there are 28 boys, how many girls are playing soccer? extra points! will mark as brainiest asap