QUIZ: Introduction: Connections Between Data Wrap-Up
Which equation is the equation of the line, in point-slope form, that has a slope of -4 and passes through the point (7, 1)?
y-7= -4(x - 1)
y-1= -4(x + 7)
y-7= 4(x - 1)
y-1= -4(x – 7)
3
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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.