2e = 6.8 ?

Timed quiz unfortunatelyy

Which math sentence can be used to determine if the triangle is a right triangle?

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

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?