Two cuboid-shaped metal bars are the same size. They are 12.4 cm long, 5.6 cm wide and 2.5 cm thick. One bar is iron with a density of 7.9 grams/cm3 and the other is copper with a density of 9.0 grams/cm3.

a Calculate the difference in their masses to the nearest gram.

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Describe the relationship between the angles of similar triangles and the sides of similar triangles

What percent of the circle below is shaded?