Which is the final step to complete the proof?

XXX Write a linear equation for each side of the triangle.

Step-by-step explanation:

hope this helps

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!