Which graph represents the solution set for the quadratic inequality x2 + 2x + 1 > 0? -5 4 -3 -2 -1 0 1 2 3 4 5 X
O:
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-5 -4 -3 -2 -1 0 1 2 3 4 5 x
-5 4 -3 -2 -1 0 1 2 3 4 5 X
-5 -4 -3 -2 -1 0 1 2 3 4 5 X

The correct answer is addition

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.