The distance between two points, a and b, on a number line is expressed as |a – b|, where a and b are rational numbers. Think about locating a point halfway between a and b on a number line. IF u scam an answer i will report i will give brainliest to best answer

The difference is 5,100m?

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.