A lab technician needs to find the density of 64.8 g of an
unknown rock sample. She places 50 cm^3 of water in a
graduated cylinder and places the rock in the water,
noting that the waterline rose to 62 cm^3. Based in this
information, what is the density of the sample?

Which one ? is the answer and how to find this answer

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe