Assuming a normal distribution, what is the z-score associated with 99th percentile.

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.

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?

Add. express your answer in simplest form. 12 9/10+2 2/3 = i need u guys to me find the answer to this question