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]
s
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
8
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]
8
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]
32,541,080
questions answered
Popular Conversations
An ocean wave is an example of a(n) _____ wave form.
Weegy: An ocean waves are examples of surface wave. User: primary wave Weegy: In physics, a wave is disturbance or ...
10/26/2020 2:20:04 PM| 5 Answers
What is wailing?
10/27/2020 3:43:18 AM| 4 Answers
Write the following equation in the general form Ax + By + C = 0. 2x ...
Weegy: 2x + y = 6 in general form is 2x + y - 6 = 0 User: Write the following equation in the general form Ax + By + ...
10/19/2020 9:42:21 PM| 4 Answers
An athlete's arousel level refers to
10/18/2020 2:09:45 AM| 4 Answers
There are twelve months in year.
Weegy: 12+12 = 24 User: Approximately how many hours does she play soccer in a year?
10/26/2020 3:19:01 PM| 3 Answers
Amendment two
Weegy: An amendment is a formal or official change made to a law, contract, constitution, or other legal document. ...
10/21/2020 3:13:51 PM| 3 Answers
Practice and specific training can improve components of ...
Weegy: Practice and specific training can improve components of skill-related fitness limited by heredity. TRUE. ...
10/28/2020 12:20:02 AM| 2 Answers
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
S
L
L
Points 1969 [Total 6703] Ratings 0 Comments 1959 Invitations 1 Offline
S
L
L
1
Points 1793 [Total 8555] Ratings 14 Comments 1653 Invitations 0 Offline
S
L
P
R
P
R
L
P
P
C
R
P
R
L
P
R
P
R
P
R
Points 1289 [Total 16963] Ratings 4 Comments 1069 Invitations 18 Offline
S
L
R
Points 1223 [Total 1557] Ratings 0 Comments 1223 Invitations 0 Offline
S
L
Points 954 [Total 1122] Ratings 1 Comments 944 Invitations 0 Offline
S
L
P
P
P
1
P
L
1
Points 442 [Total 8593] Ratings 6 Comments 382 Invitations 0 Offline
S
L
P
1
L
Points 378 [Total 5914] Ratings 4 Comments 338 Invitations 0 Offline
S
L
Points 363 [Total 394] Ratings 0 Comments 363 Invitations 0 Offline
S
L
Points 203 [Total 203] Ratings 0 Comments 203 Invitations 0 Offline
S
L
Points 184 [Total 3011] Ratings 5 Comments 134 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.