Are the following two lines parallel, perpendicular, or skew? L1 : x = 1 + 2t, y = t, z = 1 + 4t L2 : ~r = h3, 1, 5i + th4, 2, 8i.

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!