PLEASE HELP ASAP WILL MARK BRAINLIEST

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?

Which two characteristics belong to mahayana buddhism. a.followers worship and offer animal sacrifice at festivals b.a followers highest aim is to attain the status of a bodhisattva c.an emphasis is placed on fulfilling sensual pleasure d.this form of buddhism is the most acient for od buddhism that exists today e.followers belive that everyone is capable of attaining enlightenment

Why would nations in latin america be part of a mostly arab cartel group known as opec? a) latin america refused to do business with countries that were not part of opec. eliminate b) natural resources such as oil are a major economic development for some latin american countries. c) latin america has a long history of distrust of the united states and fears a take-over of oil fields. d) latin american nations such as venezuela needed in getting natural resources to other parts of the world. 15