a student measures a cube composed of an unknown substance. the mass was determined to be 112.8g , and the volume 63cm3 . what is the density of the cube

Explanation:

density =  mass/ volume

          =  112.8 / 63 = 1.79 g/ml

it is important to conserve water because there is very limited amount of freshwater here on earth and if we are not smart about how we use it we will only be runnning out of our supply faster than neccessarry.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: