subject
Mathematics, 19.07.2020 01:01 eden1017

3. Given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solution. Show why this is true by solving the system of equations given. Justify the reason for each step. HINT: Use addition property of equality and multiplication property of equality in your answers. (8 points: 1 point for each question) 5x + 2y = 7 3x – y = 2 To solve the system using elimination, first multiply the bottom equation by 2. Write the new system of equations. (1 point) Why is this multiplication allowed? (1 point) What variable will be eliminated when the equations are combined after the multiplication? (1 point) Next, add the equations together. Your answer should be a single equation with one variable. (1 point) Why can you add the equations? (1 point) Solve the equation for x. (1 point) Substitute x back into one of the equations to solve for y. (1 point) What is the solution to the system of equations? (1 point)

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 18:30
The border line of the linear inequality 4x + 7y < 5 is dotted true or false?
Answers: 2
question
Mathematics, 21.06.2019 22:00
What is the solution to the division problem below x3+x2-11x+4/x+4
Answers: 2
question
Mathematics, 21.06.2019 22:30
Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120
Answers: 1
question
Mathematics, 22.06.2019 03:30
3a + 5b - 7 = 0 a - 2b - 4 = 0 solve the system by the elimination method. check your work {(96/11, -5/11)} {(34/11, -5/11)} {(32/33, 5/11)}
Answers: 1
You know the right answer?
3. Given a system of two equations in two variables, replacing one equation by the sum of that equat...
Questions
question
English, 30.06.2021 04:00
question
Mathematics, 30.06.2021 04:00
question
History, 30.06.2021 04:00