The solution set for negative 2x^2 + 12x=0

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

In the 30-60-90 triangle below side s has a length of and side r has a length

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0