Question and answer
Determine the value of 3(x+6)-7 when x=7
The value is 32. Solution: 3(x + 6)- 7 when x = 7; 3(7 + 6) - 7 = 3(13) - 7 = 39 - 7 = 32
Expert answered|kdranek|Points 20|
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Asked 11/17/2014 11:36:54 AM
Updated 11/17/2014 3:29:04 PM
1 Answer/Comment
This answer has been confirmed as correct and helpful.
Edited by andrewpallarca [11/17/2014 3:28:27 PM], Confirmed by andrewpallarca [11/17/2014 3:28:28 PM]
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Added 11/17/2014 3:29:04 PM
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Updated 11/17/2014 3:27:02 PM
1 Answer/Comment
6(x - 6) - 2(x - 3) + 3x
= 6x - 36 - 2x + 6 + 3x
= 4x - 30 + 3x
= 7x - 30
Added 11/17/2014 3:27:01 PM
This answer has been confirmed as correct and helpful.
Identify the solution(s) of the system of equations, if any. -4x - 2y = 12 6y = -12x - 36
Weegy: -4X-2y=12 -12X-6Y=36 X=(12+2Y)/-4 substitute x to second equation -12[(12+2Y)/-4]-6Y=36 36+6Y-6Y=36 0=0 User: Identify the solution(s) of the system of equations, if any. x + 5y = 4 2x - 5y = 2 (More)
Question
Expert Answered
Updated 11/22/2014 2:35:17 AM
2 Answers/Comments
The solution(s) of the system of equations : -4x - 2y = 12 6y = -12x - 36 is it has infinite solutions .
-4x - 2y = 12 is equal to -2x - y = 6 ,
6y = -12x - 36 is also equal to -2x - y = 6 ,
so it has infinite solutions .
Added 11/21/2014 7:10:55 PM
This answer has been confirmed as correct and helpful.
Deleted by andrewpallarca [11/22/2014 2:49:42 AM], Undeleted by andrewpallarca [11/22/2014 2:49:44 AM], Confirmed by andrewpallarca [11/22/2014 2:49:48 AM], Rated good by andrewpallarca
The solution(s) of the system of equations of x + 5y = 4 2x - 5y = 2 is x = 2 , y = 2/5.
equation 1 add equation 2 ,
x + 5y + 2x - 5y = 4 + 2
3x = 6
x = 2
2 + 5y = 4
5y = 2
y = 2/5 .
Added 11/22/2014 2:35:17 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/22/2014 2:50:43 AM], Rated good by andrewpallarca
Identify the solution(s) of the system of equations, if any. x + 5y = 4 2x - 5y = 2
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Question
Updated 11/21/2014 5:48:38 PM
2 Answers/Comments
The solution(s) of the system of equations, x + 5y = 4 2x - 5y = 2 is x = 2, y = 2/5 .
Equation 1 add equation 2 ,
x + 5y + 2x - 5y = 4 + 2
3x = 6
x = 6/3
x = 2
put x = 2 in equation 1
2 + 5y = 4
5y = 2
y = 2/5 .

Added 11/21/2014 5:45:40 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/21/2014 5:57:37 PM], Rated good by andrewpallarca
The solution(s) of the system of equations, 4x + 2y = 4 y = 3 - 3x is x = 1 , y = 0 .
Put equation 2 in equation
4x + 2(3 - 3x) = 4
4x + 6 - 6x = 4
-2x = -2
x = 1
y = 3 - 3*1
y = 0 .

Added 11/21/2014 5:48:38 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [11/21/2014 5:58:34 PM], Rated good by andrewpallarca
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