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algebra
i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y  1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of
asked by Alyssa on April 5, 2011 
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What advantages does the method of substitution have over graphing for solving systems of equations? Choose the correct answer below. A. Graphing cannot be used to solve dependent or inconsistent systems due to the nature of the
asked by zwgz123 on December 15, 2017 
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Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=4 (y+2) + y = 4 solve for y. Then, x= y+2 i don't get
asked by Svetlana on October 17, 2006 
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I need help learning to solve substitution. I have a problem that says solve the system by substitution 4.5x2y=12.5 3.25xy=0.75
asked by Samantha on October 8, 2017 
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17) solve this linear system using the method of substitution. 2yx=10 y= 3/2x1 20) simplify then solve by substitution 2(x4)+y=6 3x2(y3)=13 just need help with these 2.
asked by Ma names Jeff on February 27, 2016 
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Can you please help solve this equation using the substitution method? I have tried and keep getting that X and Y = 7/2, but the answer in the book states no solution, inconsistent system. What am I doing wrong? Please help! Solve
asked by Mia on March 2, 2010 
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solve each system of equations by substitution. y=3x9 please help explain how to solve this using substitution.
asked by eliza on May 12, 2009 
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Solve the integral of (x*e^2x)/(1+2x)^2 by first using u substitution and then use integration by parts. I am very confused on how to do usubstitution with this because no mattter what I let u be equal to the du never comes out
asked by Dave on September 29, 2017 
Algebra
Can someone please help solve this? Solve by using addition or substitution or addition. 10x+2y=7 y=5x+3 the answer my got was x=11/10 y=2 My teacher said that was wrong. Never mind this post I found out how to solve it. Try
asked by jessica on May 9, 2007 
math
Solve systems by substitution 5x  2y = 5 y  5x = 3 Substitute 5x + 3 for y in the first equation, and solve it for x. Once you have x, use either of the two equations you wrote to solve for y.
asked by Robin on August 8, 2007 
Algebra help needed please!!
I have a few questions I need help with! 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the solution in terms of a parameter. 3x+yz=4
asked by Kris on March 28, 2013