The density of an object can be found by dividing the mass of the object by its volume. The volume of the Earth is 2.1\times 10^{11}2.1×10
11
cubic meters and its mass is 7\times 10^{24}7×10
24
kilograms. What is the density of the Earth in kilograms per cubic meter? Answer should be in scientific notation with first number being rounded to the hundredths place.

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp