Fthe volume for 3-d pyramid a is 300 cm3 and the volume for 3-d pyramid b is 900 cm3, how many times bigger is the volume of pyramid b than pyramid a?

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.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years