Apie was cut into 8 equal slices if ruben ate 3/4 of the pie how many slices did he eat

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

Which of the following vectors are orthogonal to (2,1)? check all that apply

What is the area of the shaded sector?