Calculate the density of a block of metal with a volume of 12.5 cm3 and mass of 126.0 g

Given the points a(-2, 1) and b(8, 6), find the coordinates of the point c on directed line segment ab, that partitions ab in the ration 2: 3.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9