I really need help I will mark as brainliest. What is the contour interval?
Provide an approximate elevation for points W, X, Y, and Z (Z is pointing right to the line).

Adice is rolled 5 times. how many possible rolls are there? ( determine the number of outcomes using only the fundamental counting principal )

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

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.