Help me please! Im stuck on this question and cant find any answer!!

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

Research the topic, classifications of business, then write four to six paragraphs explaining which classifications of business you utilize in your day-to-day life. incorporate at least four types and illustrate how they translate into your daily life. use complete sentences and proper paragraph form. (follow apa style.)

Think about how the author structured the article you just read, then answer the question. what type of text structure does the author use in this article? the author uses a sequence of events to trace the development of democratic rule from ancient greece to the united states. the author presents a cause-and-effect relationship to explain how the first government created in athens resulted in the empire’s downfall. the author compares and contrasts ideas about government developed by two philosophers, plato and aristotle. the author describes the problems faced by the american founding fathers, and details the solutions proposed by plato and aristotle.ach characteristic of government to athens or rome