Janet designed a star on her computer and each side had a length of 40 mm. she reduced the figure by a scale factor of 0.65. which sideslengths did she reduced from the star?

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.

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.