the train from Geneva Switzerland to Milan Italy travels at 100 miles per hour and the two cities are 200 miles apart how long does the journey from Geneva to Milan take

Let w=23 . what is the value of w + 45 ?

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis