Question and answer
bad. don't know how to matries in precalculus
Question
Asked 4/13/2011 2:55:58 AM
Updated 4/24/2014 11:10:35 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [4/24/2014 11:10:35 PM]
g
Get an answer
Original conversation
User: bad. don't know how to matries in precalculus

Weegy: whats your problem with the subject?
Greenpepper|Points 2479|

User: solve the system of equaton x+y-2x=4 ,2x-3y+3x=5 ,3x+3y+7z=14

Question
Asked 4/13/2011 2:55:58 AM
Updated 4/24/2014 11:10:35 PM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [4/24/2014 11:10:35 PM]
New answers
Rating
8
x + y - 2x = 4 can be simplified to be -x + y = 4, so y = x + 4
2x - 3y + 3x = 5 can be simplified to be 5x - 3y = 5 (equation 1)
3x + 3y + 7z = 14 (equation 2)
Replace y in the equation 2 we have:
5x - 3(x + 4) = 5
5x - 3x - 12 = 5
2x = 17
x = 17/2
y = 17/2 + 4 = 25/2
replace x, y in the equation 2,
3(17/2) + 3(25/2) + 7z = 14
51/2 + 75/2 + 7z = 14
7z = 14 - 126/2 = 14 - 63 = -49
z = -49/7 = -7
The solution for the system of equaton x+y-2x=4 ,2x-3y+3x=5 ,3x+3y+7z=14 is x = 17/2, y = 25/2, z = -7
Added 4/24/2014 11:08:57 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [4/25/2014 12:38:29 PM]
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
34,031,045
questions answered
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
Popular Conversations
Whats is the First step in selective breeding
Weegy: 2 + 2 = 4
6/14/2021 2:03:46 PM| 5 Answers
Through which sense is rhythm best experienced in artworks?
Weegy: Rhythm is best experienced in artwork through the sense of sight. User: What is the meaning of life
6/16/2021 12:28:57 AM| 4 Answers
A strong negative feedback process can cause Earth's climate to reach ...
Weegy: A strong negative feedback process can cause Earth's climate to reach a state of balance.
6/20/2021 9:52:17 PM| 4 Answers
True or False: The higher the BAL, the higher the risk of a fatal ...
Weegy: The higher the BAL, the higher the risk of a fatal crash. TRUE. User: All of the information your brain ...
6/14/2021 7:12:01 PM| 3 Answers
which of the following sentences correctly uses a comparative ...
Weegy: George has a bigger appetite than Harry. -correctly uses a comparative adjective. User: adverbs can modify ...
6/22/2021 6:33:45 PM| 3 Answers
Modern machinery did all except:
6/23/2021 5:00:17 PM| 3 Answers
What are the overall powers of the legislative branch
Weegy: Legislative branch makes all laws, declares war, regulates interstate and foreign commerce and controls taxing ...
6/13/2021 1:16:55 AM| 2 Answers
When an incident occurs or threatens, local emergency manage ...
Weegy: The Incident Command System (ICS) and NIMS are the same, and these terms can be used interchangeably. FALSE. ...
6/13/2021 2:02:47 PM| 2 Answers
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
S
L
Points 795 [Total 857] Ratings 3 Comments 765 Invitations 0 Online
S
L
L
Points 790 [Total 5157] Ratings 9 Comments 700 Invitations 0 Offline
S
L
P
P
Points 505 [Total 2900] Ratings 0 Comments 505 Invitations 0 Offline
S
L
Points 319 [Total 319] Ratings 10 Comments 219 Invitations 0 Offline
S
L
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Points 288 [Total 4227] Ratings 22 Comments 68 Invitations 0 Offline
S
L
Points 278 [Total 278] Ratings 0 Comments 278 Invitations 0 Offline
S
L
1
1
1
Points 208 [Total 2988] Ratings 11 Comments 98 Invitations 0 Offline
S
L
P
P
L
P
Points 198 [Total 6915] Ratings 6 Comments 138 Invitations 0 Offline
S
L
Points 173 [Total 366] Ratings 0 Comments 173 Invitations 0 Offline
S
L
Points 166 [Total 669] Ratings 7 Comments 96 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.