Notice: Payments for answers will end 4/10/2017. Click for more info.
You have new items in your feed. Click to view.
Q: Solve the following system of equations by the substitution method. "5x = y + 6," "2x - 3y = 4"
A: The solution for 5x = y + 6, 2x - 3y = 4 is x = 14/13, y = -8/13. From 5x = y + 6 , we can get y = 5x - 6, which we can put it into the 2th equation. 2x - 3y = 4 2x - 3 (5x - 6) =4 -13x + 18 =4 x = 14/13 put x = 14/13 into the y = 5x - 6 , we can get the value of y y= 5x - 6 y= 5*14/13 - 78/13 y= 70/13-78/13 y= - 8/13
Question
Asked 6/16/2011 9:19:13 AM
Updated 9/14/2014 1:09:10 AM
Rating
0
The solution for 5x = y + 6, 2x - 3y = 4 is x = 14/13, y = -8/13.
From 5x = y + 6 , we can get y = 5x - 6, which we can put it into the 2th equation.
2x - 3y = 4
2x - 3 (5x - 6) =4
-13x + 18 =4
x = 14/13

put x = 14/13 into the y = 5x - 6 , we can get the value of y
y= 5x - 6
y= 5*14/13 - 78/13
y= 70/13-78/13
y= - 8/13
Added 9/14/2014 1:09:10 AM
janezshun, please make sure to clearly type your solutions by using proper spacing.
Added 9/10/2014 7:00:16 AM
Hi andrew , for these question, Can I simplify or didn't use to add the calculation steps? I think I can't simplify it ,because the question asked to use the substitution method.
Added 9/10/2014 8:01:36 AM
Questions asked by the same visitor
TRUE OR FALSE?The set of independent variables of a function is the DOMAIN
Question
Updated 6/16/2015 2:10:27 PM
The set of independent variables of a function is the DOMAIN. TRUE.

Added 6/16/2015 2:10:27 PM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [6/16/2015 2:12:21 PM]
Solve |2x - 5| = 4.
Question
Updated 8/24/2014 3:46:36 PM
|2x - 5| = 4

2x - 5 = -4 or 2x - 5 = 4

2x - 5 = -4;
2x = -4 + 5;
2x = 1;
x = 1/2;

2x - 5 = 4;
2x = 4 + 5;
2x = 9;
x = 9/2;

x = 1/2 or x = 9/2
Added 8/24/2014 2:47:21 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [8/24/2014 3:46:37 PM]
Evaluate. -|-7 + 3| A.-4 B.4 C.-10
Question
Updated 4/26/2014 6:54:44 PM
-|-7 + 3|;

-7 + 3 = -4
Added 4/26/2014 6:54:44 PM
This answer has been confirmed as correct and helpful.
Evaluate. -|-7 + 3|
Weegy: Two Negatives would equal a positive so the equation would be 7+ -3= Which would equal a positive 4 (More)
Question
Updated 1/12/2015 8:55:41 AM
-|-7 + 3| = -|-4| = -4
Added 1/12/2015 8:55:37 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [1/12/2015 9:02:42 AM]
Simplify (5ab^4 c)(-abc^2).
Question
Updated 6/6/2015 12:20:43 PM
(5ab^4 c)(-abc^2)
= -5a^2b^5c^3
Added 5/3/2015 3:08:35 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [6/6/2015 12:20:39 PM]
*
Get answers from Weegy and a team of really smart lives experts.
S
L
Points 247 [Total 265] Ratings 0 Comments 177 Invitations 7 Offline
S
L
Points 130 [Total 130] Ratings 0 Comments 130 Invitations 0 Offline
S
L
R
Points 115 [Total 266] Ratings 1 Comments 5 Invitations 10 Offline
S
R
L
R
P
R
P
R
Points 66 [Total 734] Ratings 0 Comments 6 Invitations 6 Offline
S
1
L
L
P
R
P
L
P
P
R
P
R
P
R
P
P
Points 62 [Total 13329] Ratings 0 Comments 62 Invitations 0 Offline
S
L
1
R
Points 34 [Total 1450] Ratings 2 Comments 14 Invitations 0 Offline
S
L
Points 10 [Total 187] Ratings 0 Comments 0 Invitations 1 Offline
S
Points 10 [Total 13] Ratings 0 Comments 10 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 0 Comments 0 Invitations 1 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.