Alpha and beta are the zeros of the polynomial x^2 -(k +6)x +2(2k -1). find the value of k if alpha + beta = 1/2 alpha beta(its urgent)

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Step-by-step explanation:

We are given and are zeros of the polynomial .

We want to find the value of if .

Lets use veita's formula.

By that formula we have the following equations:

 (-b/a where the quadratic is ax^2+bx+c)

(c/a)

Let's simplify those equations:

If and , then .

Let's solve this for k:

Subtract 6 on both sides:

Find a common denominator:

Simplify:

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15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.