Question and answer
Identify the solution(s) of the system of equations, if any. x + 5y = 7 6x - 10y = 18
x + 5y = 7 ; 6x - 10y = 18 ; x = -5y + 7 ; 6(-5y + 7) - 10y = 18 ; -30y + 42 - 10y = 18 ; -40y + 42 = 18 ; -40y = 18 - 42 ; -40y = -24 ; y = -24/-40 ; y = 3/5 ; x + 5(3/5) = 7 ; x + 15/5 = 7 ; x + 3 = 7 ; x = 7 - 3 ; x = 4 ; Solution set: (4, 3/5)
Question
Asked 10/7/2013 12:34:21 AM
Updated 239 days ago|1/25/2018 11:23:46 PM
1 Answer/Comment
Edited by Masamune [1/25/2018 11:23:44 PM]
Get an answer
New answers
Rating
3
x + 5y = 7 ;
6x - 10y = 18 ;

x = -5y + 7 ;
6(-5y + 7) - 10y = 18 ;
-30y + 42 - 10y = 18 ;
-40y + 42 = 18 ;
-40y = 18 - 42 ;
-40y = -24 ;
y = -24/-40 ;
y = 3/5 ;

x + 5(3/5) = 7 ;
x + 15/5 = 7 ;
x + 3 = 7 ;
x = 7 - 3 ;
x = 4 ;

Solution set: (4, 3/5)
Added 239 days ago|1/25/2018 11:23:46 PM
This answer has been confirmed as correct and helpful.
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
Express 0.005 in scientific notation. User: Express 7900000 in scientific notation.
Question
Not Answered
Updated 6/30/2014 5:18:28 PM
2 Answers/Comments
0.005 in scientific notation is 5 x 10^-3.
Added 6/30/2014 5:18:17 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [6/30/2014 5:24:34 PM]
7900000 in scientific notation is 7.9 x 10^6.
Added 6/30/2014 5:18:26 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [6/30/2014 5:24:42 PM]
There are 8 pints in a gallon. How many pints are in 3 gallons? User: In a given training week, a swimmer completes 1/4 mile on day one 2/5, mile on day two 3/7, and mile on day three. How many total miles does the athlete swim in the given week?
Weegy: 1.59517 miles User: Select the simplified expression for 8(x - 6) - 6(x - 3) + 9x. User: The temperature on one day in January for Phoenix, AZ, is 46 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -17 degrees Fahrenheit. What is the difference between these two temperatures? (More)
Question
Not Answered
Updated 5/25/2014 9:24:30 AM
2 Answers/Comments
There are 8 pints in a gallon. In 3 gallons are there 24 pints.
8 pints/gallon x 3 gallons = 24 pints.
Added 5/25/2014 9:23:46 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [5/25/2014 9:24:50 AM]
8(x - 6) - 6(x - 3) + 9x
= 8x - 48 - 6x + 18 + 9x
= 11x - 30
Added 5/25/2014 9:24:30 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [5/25/2014 9:25:10 AM]
27,362,743
questions answered
GET
Answers.
GET THE APP.
weegy*
*
Get answers from Weegy and a team of really smart live experts.
Popular Conversations
Time-outs are ineffective because? A. an adult uses a ...
Weegy: Time-outs are ineffective because a power struggle is created between the adult and the child. User: ...
9/12/2018 12:27:24 PM| 2 Answers
The Operations Section Chief: A. Coordinates communication between ...
Weegy: The Operations Section Chief: Directs tactical actions to achieve the incident objectives. User: Depending ...
9/13/2018 11:17:02 AM| 2 Answers
S
L
Points 1204 [Total 1515] Ratings 14 Comments 1064 Invitations 0 Offline
S
R
L
R
P
R
P
R
R
R
R
Points 426 [Total 1310] Ratings 3 Comments 306 Invitations 9 Offline
S
L
R
P
R
P
R
P
R
Points 421 [Total 1196] Ratings 3 Comments 361 Invitations 3 Offline
S
L
P
P
P
Points 356 [Total 1232] Ratings 0 Comments 356 Invitations 0 Offline
S
L
R
Points 69 [Total 186] Ratings 0 Comments 69 Invitations 0 Offline
S
Points 33 [Total 33] Ratings 1 Comments 23 Invitations 0 Offline
S
Points 23 [Total 23] Ratings 0 Comments 23 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 0 Comments 0 Invitations 1 Offline
S
L
1
R
Points 2 [Total 1453] Ratings 0 Comments 2 Invitations 0 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.