11) One soda and one taco costs $2.10. Two sodas and three tacos cost $5.15. Find the cost of a soda and a taco. Whoever answers this question will be the brainliest!!

Answer: c. x y2 04 66 16

8-2x+3x2=6 and six is your answer

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.