Question and answer
Solve x 2 + 2x - 1 = 0
Question
Asked 3/31/2014 6:08:03 AM
Updated 4/21/2014 9:22:43 PM
2 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by yeswey [4/21/2014 9:16:02 PM]
Get an answer
Original conversation
User: Solve x 2 + 2x - 1 = 0

Weegy: (x) = 4^2x - 100 when x = 2

f(x) = 4^2(2) - 100

f(x) = 16(2) - 100

f(x) = 32 - 100

f(x) = -68


User: What type of conic section is the following equation? 9x2 + 4y2 - 36 = 0 parabola, circle, hyperbola, ellipse

Question
Asked 3/31/2014 6:08:03 AM
Updated 4/21/2014 9:22:43 PM
2 Answers/Comments
This conversation has been flagged as incorrect.
Flagged by yeswey [4/21/2014 9:16:02 PM]
New answers
Rating
3
x^2 + 2x - 1 = 0
a = 1, b = 2, c = -1
b^2 - 4ac = 2^2 - 4(1)(-1) = 8
x = [-2 ± sqrt(8)]/2
= -1 ± sqrt(2)
The solution for the equation x^2 + 2x - 1 = 0 is x = -1 + sqrt(2) or x = -1 - sqrt(2)
Added 4/21/2014 9:19:47 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/21/2014 9:21:29 PM]
3
9x^2 + 4y^2 - 36 = 0
9x^2 + 4y^2 = 36
x^2/4 + y^2/9 = 1
The type of conic section for the equation 9x^2 + 4y^2 - 36 = 0 is ellipse.
Added 4/21/2014 9:22:43 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/21/2014 9:37:47 PM]
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
What is the slope of the line passing through the points (-5, 7) and (-3, 5)? -1/4, -1, 1
Weegy: -5^2 +|-1| + (-3) = 23 (More)
Question
Updated 3/26/2014 7:34:51 AM
1 Answer/Comment
The slope of the line passing through the points (-5, 7) and (-3, 5) is -1.



Added 3/26/2014 7:34:51 AM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [8/7/2014 11:11:39 AM]
Select the conic section that represents the equation. 20x = 4y 2 parabola, circle, hyperbola, ellipse
Question
Updated 4/21/2014 8:43:04 PM
1 Answer/Comment
The conic section that represents the equation 20x = 4y^2 is: Parabola.
Added 4/21/2014 8:43:04 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/21/2014 8:50:56 PM]
Find the sum and product of the roots. 2x 2 + 6x - 8 = 0
Weegy: The simpified equation is (B) 6x+ 7. (More)
Question
Updated 4/3/2014 7:32:32 AM
1 Answer/Comment
2x^2 + 6x - 8 = 0
2(x^2 + 3x - 4) = 0
2(x + 4)(x - 1) = 0
x = -4 or 1
The sum of the roots = -4 + 1 = -3
The product of the roots = (-4)(1) = -4
Added 4/3/2014 7:32:32 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [4/3/2014 7:35:48 AM]
If f = {(-1, 0), (-2, 2), (-3, 4), (-4, 6), (-5, 8)}, what is the range? {-1, -2, -3, -4, -5}, integers, even numbers, {0, 2, 4, 6, 8}
Weegy: The range is {1, 2, 3, 4, 5}. User: Evaluate P(7, 3). 840, 35, 15,120, 210 (More)
Question
Updated 4/3/2014 8:27:24 PM
1 Answer/Comment
P(7, 3) = 7!/(7 - 3)! = 7!/4! = 7 x 6 x 5 = 210
Added 4/3/2014 8:27:24 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/3/2014 8:39:19 PM]
Find the equation for the line containing the points (-2, -5) and (6, 3). y = 2x - 3, y = -2x - 3, y = x + 3, y = x - 3
Weegy: A. y = -2x - 3. The equation of the line through (1, -5) with slope -2 is y = -2x - 3 User: In a prize drawing at a fundraiser, you choose three different numbers from 1 to 8. How many ways are there to choose three numbers? 512, 336, 56, 6,720 (More)
Question
Not Answered
Updated 4/3/2014 7:16:35 AM
1 Answer/Comment
The equation for the line containing the points (-2, -5) and (6, 3) is y = x - 3
Added 4/3/2014 7:16:35 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [4/4/2014 1:40:58 PM]
29,943,677
questions answered
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
Popular Conversations
Limited jurisdiction
Weegy: Jurisdiction is the power, right, or authority to interpret and apply the law. User: Grand jury
5/15/2019 5:37:18 PM| 4 Answers
All occupational injuries and illnesses are preventable. True or ...
Weegy: All occupational injuries and illnesses are preventable.
5/11/2019 4:55:17 AM| 3 Answers
Which item is included in the NIMS Management Characteristic of ...
Weegy: YES - the NIMS management characteristic of Information and Intelligence Management does include surveillance of ...
5/17/2019 9:16:14 PM| 2 Answers
S
L
Points 824 [Total 824] Ratings 8 Comments 744 Invitations 0 Offline
S
L
P
C
P
C
P
C
L
P
C
Points 804 [Total 6079] Ratings 7 Comments 734 Invitations 0 Online
S
L
1
R
P
1
Points 750 [Total 3907] Ratings 5 Comments 700 Invitations 0 Offline
S
L
P
C
Points 612 [Total 2293] Ratings 1 Comments 592 Invitations 1 Offline
S
L
Points 516 [Total 516] Ratings 2 Comments 486 Invitations 1 Offline
S
L
Points 506 [Total 699] Ratings 6 Comments 36 Invitations 41 Offline
S
L
Points 496 [Total 1063] Ratings 13 Comments 66 Invitations 30 Online
S
L
1
P
1
1
Points 470 [Total 2351] Ratings 18 Comments 270 Invitations 2 Offline
S
L
R
R
Points 434 [Total 2262] Ratings 4 Comments 364 Invitations 3 Online
S
L
Points 214 [Total 1394] Ratings 6 Comments 154 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.