Two identical lines are graphed below. how many solutions are there to the system of equations?
a. one
b. two
c. infinitely many
d. zero

I believe that the correct answer would either be C) Infinitely many, if the lines have exactly the same coordinates, or D) zero, if they are parallel to each other. This is because, the point where both lines cross would be the solution to that question, so if they line up perfectly, you have an infinite amount of solutions, however, if you have two parallel lines, there is no point where they cross each other, so the number of solutions would be zero.

I hope this helped!

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.

It is a trinomial with a degree of 2 i believe