I think of a number, double it, and add eleven. I get twenty five. a) Using the statement above, form an equation.
Use the letter 'x' for the unknown number.
b)
Solve the equation​

Yeah she/ he needs look how long that is man

Well if you have 20 bats you probably want 20 balls? you don’t have enough context to answer the question.

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.