Use the discriminant to describe the roots of each equation. then select the best description. x2 - 5x + 7 = 0 double root real and rational roots real and irrational roots non-real roots

D) non-real roots

Step-by-step explanation:

In the quadratic equation and

we know that the discriminant d = .

if d <0, then the roots are non-real roots

if d = 0, then double roots.

if d >0, then the roots are real and rational/irrational.

We are given

Here a = 1, b = -5 and c = 7.

Let's find the discriminant d =

d = 25 - 28

d = -3

Which is less than zero.

d < 0, so the roots are non-real according the definition stated above.

The answer is D) non-real roots

answer:

1. 0.04

2. 0.15

step-by-step explanation:

i just finished that assignment for properties of probability distributions.

the answer is y = 11.54

hope this : )