Which number is not in scientific notation

4. find the geometric mean of 4 and 12. 24 8

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.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?