It’s B I did the assignment in Edge2020
12 3/4 is the answer if you are using mixed numbers
The more reasonable measurement of the distance between the tracks on a CD is 1.6 ⋅ 10^-3 mm. This is also equal to 0.0016mm. <span>1.6 ⋅ 10^3 mm is too large for a CD track</span>
B. -8
F(x) = -3x2 - 2x - 1
0 = -3x x 2 - 2x - 1
X= -8
Answer:
196
Step-by-step explanation:
The discriminant (Δ) is given by:

Where the polynomial is in the form:

In this problem, a = 1, b = 0, and c = -49. Thus, plugging it into the formula:

Thus, the discriminant of x² – 49 = 0 is 196.