Solving a System of Four Equations
Not what you're looking for?
1. Solve this system of equations. Put your answer in alphabetical order.
5w+3x-y-z=-2
w+x+y+z=2
2W-x+y+4z=0
3w+2x+3y+2z=1
2. If x varies directly as 2y-1, and x=9 when y=2, find the value of y when x has a value of 15.
Purchase this Solution
Solution Summary
Two high school algebra questions are answered. Very clear and step-by-step solution is provided in a 3-page word document.
Solution Preview
Below is the text part of the solution. Equations will not appear properly here. Please refer to the attached file for a complete solution.
1. Solve this system of equations. Put your answer in alphabetical order.
5w + 3x -y -z = -2 ------------(1)
w + x + y + z = 2 ------------(2)
2W - x + y + 4z = 0 ------------(3)
3w+ 2x + 3y + 2z = 1 ------------(4)
Lets add equation 1 and 2. When we add two equations, you add the left sides and write it down in the left of the "=" and add the right side and put the answer in the right side of the "=" sign. We can also subtract equation like this. We do this to eliminate certain variables from the ...
Purchase this Solution
Free BrainMass Quizzes
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
Probability Quiz
Some questions on probability
Solving quadratic inequalities
This quiz test you on how well you are familiar with solving quadratic inequalities.