In a certain large lake 30% of the fish are thrown back because they are too small consider catching 15 fish from the lake assume that the fishing car can be considered a random sample from a very large number of fish in the lake but why equal the number of fish that you throw back because they’re too small

The slope of the function is 0.5.

Planet earth has a mass of 5.9726x10²⁴ kg.then: 5.9726x10²⁴ kg=100% of the total earth mass.if the water´s mass=5x10-4 % of the total mass, we can solve this problem by the rule of three.5.9726x10²⁴ %*10⁻⁴ %x=(5.9726x10²³ kg)(5*10⁻⁴  %) / 100 %=2.9863x10¹⁹ kganswer:   the mass of the planet´s water would be   2.9863 x 10¹⁹ kg.