Question and answer
The line of symmetry for the quadratic equation y = ax^2 - 8x - 3 is x = 2. What is the value of "a"?
Question
Asked 11/21/2014 11:03:20 PM
Updated 12/29/2014 11:59:11 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by janezeshun [12/29/2014 11:58:49 PM]
s
Get an answer
Original conversation
User: The line of symmetry for the quadratic equation y = ax^2 - 8x - 3 is x = 2. What is the value of "a"?

Weegy: 8x + 3 = 7x - 2

8x - 7x = -2 - 3

x = -5


Question
Asked 11/21/2014 11:03:20 PM
Updated 12/29/2014 11:59:11 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by janezeshun [12/29/2014 11:58:49 PM]
New answers
Rating
8
The line of symmetry for the quadratic equation y = ax^2 - 8x - 3 is x = 2. 2 is the value of "a" .
8/2a = 2
8 = 4a
a = 8/4
a = 2
Added 12/29/2014 11:59:11 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [12/30/2014 3:57:16 AM]
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
Find the product. (n 3)3 · (n 4)5
Weegy: your question? User: find the product (More)
Question
Updated 11/15/2014 3:55:18 AM
1 Answer/Comment
(n^3)^3 * (n^4)^5

= n^9 * n^20;

= n^29
Added 11/15/2014 3:22:11 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/15/2014 3:55:15 AM]
Find the seventh term of the following sequence? 1.5, 3, 6, ...
Question
Not Answered
Updated 11/16/2014 11:44:11 PM
1 Answer/Comment
The seventh term of the following sequence: 1.5, 3, 6, is 96.
common ratio = 6/3 = 3/1.5 = 2
7th term = 1.5*2^(7 - 1) = 1.5*2^6 = 1.5*64 = 96
Added 11/16/2014 11:44:11 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/17/2014 12:26:17 AM]
Which of the following constants can be added to x^2 - 6x to form a perfect square trinomial?
Weegy: The answer is 1/4. Here, I'll show you how to get that answer: Trial and Error Method: 1) 1/4, [ 1/2 and 1 are the possible answers in the choices but we know that 1/2 is not a perfect square so it's not possible for 1/2 to be the answer. 2) Now try 1/4 and 1 and add them to the equation to get: x2 - x + 1/4 x2 - x + 1 3)Use the perfect square formula if you can: x2 - x + 1/4 becomes (x-1/2)2? Yes! x2 - x + 1 becomes (x-1)2?...No! that's wrong because (a-b)2 = a2-2ab +b2 Thus, 1/4 is the answer. Easy Formula Method: 1) In a perfect square trinomial, c = (b/2a)2. a=1 because it's the co-efficient of x2 b=1 because it's the coefficient of x c=? and it's the missing constant using the formula and the given, c = 1/4. That's it! :D Good Luck! ] (More)
Question
Updated 12/4/2014 10:11:30 PM
1 Answer/Comment
9 can be added to x^2 - 6x to form a perfect square trinomial.
x^2 - 6x + 9 = (x - 3)^2
Added 12/4/2014 10:11:30 PM
This answer has been confirmed as correct and helpful.
Solve the following quadratic equation using the quadratic formula and then choose the correct solution set. 5x^2 + 7x = 6
Question
Updated 11/21/2014 11:24:30 PM
1 Answer/Comment
5x^2 + 7x = 6 ;
5x^2 + 7x - 6 = 0 ;
(5x - 3)(x + 2) = 0 ;
when 5x- 3 = 0 , x = 3/5 ;
when x + 2= 0 , x = -2 ;
The solution for 5x^2 + 7x = 6 is x = 3/5 , or x = -2.
Added 11/21/2014 11:24:30 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/21/2014 11:28:41 PM]
Solve the following quadratic equation using the quadratic formula and then choose the correct solution set. 6x^2 - 7x + 2 = 0
Question
Updated 11/21/2014 11:19:55 PM
1 Answer/Comment
6x^2 - 7x + 2 = 0
(3x - 2)(2x - 1) = 0
3x - 2 = 0 ,x = 2/3
2x - 1 = 0, x = 1/2
The solution for 6x^2 - 7x + 2 = 0 is x = 2/3 , or x = 1/2 .
Added 11/21/2014 11:19:55 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/22/2014 4:50:34 AM], Rated good by andrewpallarca
34,446,775
questions answered
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
Popular Conversations
The correct plural of the noun attorney is _______. The primary ...
Weegy: The correct plural of noun attorney is attorneys.
9/17/2021 5:26:50 PM| 12 Answers
A child s temperament is primarily influenced by _______ factors. The ...
Weegy: A child s temperament is primarily influenced by BIOLOGICAL factors.
9/9/2021 6:19:31 PM| 6 Answers
Simplify 20 + (2 + r).
Weegy: 20 + (2 + r) User: simplify 7.5 + n + 9.63. Weegy: 7.5 + n + 9.63 = n + 17.13 User: 7.95 - 3.86 + n. ...
9/9/2021 2:42:29 PM| 4 Answers
The jurisdiction receiving mutual aid can ____________ resources if ...
Weegy: The jurisdiction receiving mutual aid can DECLINE resources if they do not meet its needs. User: Which NIMS ...
9/9/2021 6:28:24 PM| 3 Answers
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
S
L
Points 634 [Total 868] Ratings 1 Comments 624 Invitations 0 Offline
S
L
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
P
1
L
P
1
Points 590 [Total 6463] Ratings 10 Comments 490 Invitations 0 Offline
S
L
Points 403 [Total 569] Ratings 4 Comments 363 Invitations 0 Offline
S
L
P
P
L
P
Points 349 [Total 7559] Ratings 11 Comments 239 Invitations 0 Offline
S
L
R
P
Points 185 [Total 3134] Ratings 7 Comments 115 Invitations 0 Offline
S
L
P
P
Points 133 [Total 3908] Ratings 1 Comments 123 Invitations 0 Offline
S
L
L
P
Points 131 [Total 5926] Ratings 1 Comments 121 Invitations 0 Offline
S
L
Points 126 [Total 1478] Ratings 1 Comments 116 Invitations 0 Offline
S
L
Points 116 [Total 142] Ratings 6 Comments 56 Invitations 0 Offline
S
L
Points 111 [Total 137] Ratings 0 Comments 111 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.