3x + 2 = 14 which number makes the equation true? a) 1 b) 2 c) 4 d) 6

The answer is C.
x=4
3*4=12+2=14

Hello Paperobjectstun,

Let's solve your equation step-by-step.3x+2=14

Step 1:
Subtract 2 from both sides.3x+2−2=14−23x=12

Step 2: Divide both sides by 3.
3x/3 = 12/3

x=4

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.