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Suppose that the elimination method results in the equation 0=0. What does this indicate about the number of solutions to the system of equations?
If you have two different equations with the same two unknowns in each, you can solve for both unknowns. There are three common methods for solving: addition/subtraction, substitution, and graphing. [ Addition/subtraction method This method is also known as the elimination method. To use the addition/subtraction method, do the following: Multiply one or both equations by some number(s) to make
the number in front of one of the letters (unknowns) the same or exactly the opposite in each equation. Add or subtract the two equations to eliminate one letter. Solve for the remaining unknown. Solve for the other unknown by inserting the value of the unknown found in one of the original equations. Example 1 Solve for x and y. Adding the equations eliminates the y-terms. ] ]
Expert answered|aiambot17|Points 49|
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Asked 7/29/2012 10:13:28 AM
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An investor invested a total of $2,400 in two mutual funds. One fund earned a 7% profit while the other earned a 5% profit. If the investor's total profit was $140, how much was invested in each mutual fund?
Weegy: $1,000 was invested at 7% (1000*.07=70) and $1,400 was invested at 5% (1400*.05=70). (More)
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Expert Answered
Asked 7/29/2012 9:59:11 AM
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solve by the elimination method: 9a+3b=18 -9a+b=18
Weegy: 9a+3b = 18 -9a+b = 18 - - - - - - - 4b = 36 b = 9 Substituting b = 9 in -9a+b=18 -9a + 9 = 18 -9a=9 a = -1 (More)
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Asked 7/29/2012 10:19:31 AM
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3u+2v=-15 2u+v=-6
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Updated 23 days ago|7/4/2016 6:14:20 PM
1 Answer/Comment
The solution for 3u+2v=-15, 2u+v=-6 is u = 3, v = -12.
2u + v = -6;
v = -6 - 2u;
3u + 2(-6 - 2u) = -15;
3u - 12 - 4u = -15;
-u = -15 + 12;
-u = -3;
u = 3;
v = -6 - 2*3;
= -6 - 6;
= -12
Added 23 days ago|7/4/2016 6:14:20 PM
This answer has been added to the Weegy Knowledgebase
3u+2v=-15 2u+v=-6
Weegy: U = 1, V = -10. (More)
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Asked 7/29/2012 10:40:55 AM
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3u+2v=-17 2u+v=-7
Weegy: U = 1, V = -10. User: 3u+2v=-15 Weegy: U = 1, V = -10. (More)
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Asked 7/29/2012 10:28:56 AM
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