Use the discriminant to determine how many real number solutions exist for the quadratic equation –4j2 + 3j – 28 = 0. a. 3 b. 2 c. 0 d. 1

C. 0

Step-by-step explanation:

–4j^2 + 3j – 28 = 0

The discriminant is b^2-4ac  if >0 we have 2 real solutions

                                                   =0  we have 1 real solutions

                                                   <0 we have 2 imaginary solutions

a = -4, b =3  c = -28

b^2 -4ac

(3)^2 - 4(-4)*(-28)

9 - 16(28)

9 -448

This will be negative so we have two imaginary solutions.

Therefore we have 0 real solutions

step-by-step explanation:

it's 15

180 square centimeters

step-by-step explanation: