Amusician wants to determine what the people who bought his last album thought about the songs. which choice best represents a sample? a) every person who bought the album. b) 250 girls who bought the album. c) a selection of 250 people who bought the album. d) a selection of 250 people who didn't buy the album.

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.