What is the discriminant of the quadratic equation 0 = –x^2 + 4x – 2?–4

8

12

24

Answers

Answer 1
Answer: from this equation : 
a: the coefficient of x^2 & b: the coefficient of x  & c: the last term 
so a=-1 ; b=4 ; c=-2;
discriminant = b^2 -4*a*c
 = (4)^2 -4(-1)(-2)
= 8 

Related Questions

What is the solution to the system of equations? x=4y 6 x-3y=4
The sum of three numbers is 2100. The first number (x) is equal to the sum of the other two (y and z) which are equal to each other. What are the three numbers (x, y, and z)? A) (1050, 525, 525) B) (1050, 524, 525) C) (1050, 526, 523) D) (1051, 525, 524)
Solve: The quantity 3 x minus 15 divided by 2 = 4x11 6 −3 −15
on Tuesday elena completed 20 item of her math homework in 36 minute. at that same rate how long will it take her to complete 35 item for Wednesday math homework A.71 minute b.63 minute c. 41 minute d. 35 minute
A character who changes during the course of the story is _____.flatroundstaticdynamic

Between which pair of consecutive integers does square root 21 lie? 10 and 11 5 and 6 20 and 22 4 and 5

Answers

square root of 11. 3 & 4 2. square root of 33. 5 & 6 3. square root of 8. 2 & 3 4. cube root of 220. 6 & 7 5. cube root of -80. 4 & 5 6. fourth root of 20. 2 & 3 7. square root of 300. 17 & 18 8. fifth root of -35. 2 & 3 9. square root of 150. 12 & 13 10. cube root of -312. 6 & 7

In a fruit cocktail, for every 18 ml of orange juice you need 3 ml of apple juice and 54 ml of coconut milk. What is the ratio of apple juice to coconut milk to orange juice expressed in its simplest form?

Answers

Answer:

1:18:6

Step-by-step explanation:

3:54:18

This equals 1:18:6

Simplify 20 + (2 + r).

Answers

the answer is 22+r
:]

Mr Morris earns $3500 per month. He deposits 2/7 of his salary every month. How much money will he deposit in 5 month.

Answers

5000, take 3500 multiplied by 2/7 to find the amount of money deposited per month which is 1000 then multiply it by 5 to find the deposit over 5 months
3500 x 2/7= 1000
1000 x 5 = 5000

He will deposit $5000 in 5 months

Please i need help ASAP!!! Extra points!!The cost of 3-D movie tickets is $12 for 1 ticket,$24 for 2 tickets, and $36 for 3 tickets. Determine whether the cost is proportional to the number of tickets by graphing on the coordinate plane.Explain your reasoning.

Answers

Answer:

yes the cost is proportional to the number of tickets

Step-by-step explanation:

for each 1 ticket added, it is $12 more

you can graph it by using the equation y=12x where x is the amount of tickets and the y-intercept is (0,0)

Find the distance between the two points and round to the nearest tenth. (-2,2) and (3,-5)

Answers

Answer:

8.6 I think

Step-by-step explanation:

d=√((x_2-x_1)²+(y_2-y_1)²)