A fish, needs at least 80 cups of water in his tank to survive. His new tank currently has 63 cups of water being filled at the rate of 2 cups per minute. Write and solve an inequality that represents the amount of minutes before the fish’s new home is safe to move in. After how many minutes can the fish move in?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder