A community for students.
Here's the question you clicked on:
 0 viewing
Loujoelou
 3 years ago
Part 1: Explain, in complete sentences, which method you would use to solve the following system of equations. (1 point)
Part 2: Explain why you chose that method (1 point)
Part 3: Provide the solution to the system. (2 points)
x – 2y + z = 0
2x – 3y – 4z = –9
x + 2y – 5z = 0
1. I used elimination method
2. I used it cause it's easier than the rest.
3. I got ((97/8,10/3,23/18)
Can anyone doublecheck my solution?
Loujoelou
 3 years ago
Part 1: Explain, in complete sentences, which method you would use to solve the following system of equations. (1 point) Part 2: Explain why you chose that method (1 point) Part 3: Provide the solution to the system. (2 points) x – 2y + z = 0 2x – 3y – 4z = –9 x + 2y – 5z = 0 1. I used elimination method 2. I used it cause it's easier than the rest. 3. I got ((97/8,10/3,23/18) Can anyone doublecheck my solution?

This Question is Closed

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1Yeah I will also prefer elimination here..

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1Reason is: The first and third equation consists same x and 2y so that they can be cancelled out by just addition or subtraction..

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1Let me solve this please wait.

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1Add first and third equation you will get: 2x  4z = 0 2x = 4z 1 Now multiply first equation with 3 and second equation by 2: 3x – 6y + 3z = 0 4x – 6y – 8z = –18 Now subtract them: x + 11z = 18 2z + 11z = 18 9z = 18 z = 2

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1I got z = 2 check your solution once again @Loujoelou

Loujoelou
 3 years ago
Best ResponseYou've already chosen the best response.0K. I thought my solution was a bit weird.

Loujoelou
 3 years ago
Best ResponseYou've already chosen the best response.0K I see how you got z, and I realize x=4 correct?

Loujoelou
 3 years ago
Best ResponseYou've already chosen the best response.0@waterineyes Now I got (4,3,2)

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1x = 2z if z = 2 then surely x will be 4..

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1Yes you are right now..

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1May I suggest you something?

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1You can verify your answer.. See you got 4, 3 and 2, Just plug in these values in the equation given and check whether they are coming equal.. Like for first: x – 2y + z = 0 4  2(3) + 2 = 0 6  6 = 0 0 = 0 This means your answer is correct.. Now similarly put in second and third you will get 0 in each case.. This is how we verify our answers..

Loujoelou
 3 years ago
Best ResponseYou've already chosen the best response.0K :D Tyvm @waterineyes

waterineyes
 3 years ago
Best ResponseYou've already chosen the best response.1Welcome Dear.. \(\huge \checkmark\)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.