The following graph shows the percent of students who take each foreign language class in high school there are a total of 780 students

What is the solution of the systems of equations? y=2/3x+3 x=-2

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank