5x + 2y = 5 3x - y = 14 Which of the following equations is not a result of solving the system of equations by addition? a.) 11x = 19 b.) 11y = -55 c.) 11x = 33
Question
Updated 5/21/2014 9:53:27 PM
This conversation has been flagged as incorrect.
Flagged by yeswey [5/21/2014 9:49:10 PM]
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Original conversation
User: 5x + 2y = 5 3x - y = 14 Which of the following equations is not a result of solving the system of equations by addition? a.) 11x = 19 b.) 11y = -55 c.) 11x = 33

Weegy: The best answer is B.11y = -55
audrey17|Points 954|

User: 7x + 2y = 4 y = x + 1 Solve the system of equations.

Weegy: Solve for x: 7x+ 2y =5. Answer: x = 1/7 (5-2 y)
emdjay23|Points 3331|

User: 6x - 2y = 5 3x - y = 10 Solve the system of equations.

Weegy: (3x-2) squared is 9x^2 - 12x + 4.
twistedechoes|Points 46|

User: Solve the linear system. x + y = -3 y = 2x a.) (-1, -2) b.) no solution c.) coincident

Weegy: x=>-2
asero1010|Points 4484|

Question
Updated 5/21/2014 9:53:27 PM
This conversation has been flagged as incorrect.
Flagged by yeswey [5/21/2014 9:49:10 PM]
Rating
3
5x + 2y = 5 (equation 1)
3x - y = 14 multiple 2 on both sides:
6x - 2y = 28 (equaiton 2)
adding up equation 1 and 2 the result is:
11x = 33;

5x + 2y = 5 multiple 3 on both sides:
15x + 6y = 15 (equation 3)
3x - y = 14 multiple -5 on both sides:
-15x + 5y = -70 (equation 4)
adding up equation 3 and 4 the result is:
11y = -55
Therefore, 11x = 19 is not a result of solving the system of equations by addition.
Confirmed by andrewpallarca [9/4/2014 4:38:28 PM]
3
7x + 2y = 4
y = x + 1
institute y in the first equation:
7x + 2(x + 1) = 4
7x + 2x + 2 = 4
9x = 4 - 2 = 2
x = 2/9
y = 2/9 + 1 = 2/9 + 9/9 = 11/9
The solution for the system 7x + 2y = 4 y = x + 1 is (2/9, 11/9)
Confirmed by yumdrea [5/21/2014 9:54:19 PM]
3
6x - 2y = 5 (equation 1)
3x - y = 10 mulitple 2 on both sides:
6x - 2y = 20 (equation 2)
Equation 2 - equation 1 the result is:
0 = 15 which is a false statement.
Therefore, there is NO SOLUTION for the system of equations 6x - 2y = 5 3x - y = 10
Confirmed by andrewpallarca [9/4/2014 4:38:53 PM]
3
x + y = -3
y = 2x
institute y in the first equation the result is:
x + 2x = -3
3x = -3
x = -1,
y = 2(-1) = -2
The solution for the system of equations x + y = -3 y = 2x is (-1, -2)
Confirmed by jeifunk [5/21/2014 9:58:55 PM]

Questions asked by the same visitor
Solve the system by the elimination method. -2x + y + 6 = 0 2x + y - 8 = 0 When you eliminate x, what is the resulting equation
Question
Updated 4/16/2014 1:43:57 AM
-2x + y + 6 = 0
2x + y - 8 = 0
2y - 2 = 0 which is the resulting equation when you eliminate x.
Confirmed by jeifunk [4/16/2014 1:56:26 AM]
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