Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
GabriellaGurl101
Group Title
Please Help Me It Is Very IMPORTANT!! :)
Thank You
 2 years ago
 2 years ago
GabriellaGurl101 Group Title
Please Help Me It Is Very IMPORTANT!! :) Thank You
 2 years ago
 2 years ago

This Question is Closed

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
When solving systems of equations, how do you determine what method to use? For the next can you please help me solve it and what all you did please
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
here is the problem 6x  4y = 54 9x + 2y = 69
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.2
You generally look at what method will be the easiest/fastest to do.
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.2
With that equation, you can see that the y coefficients are two and 4. So, it looks like a minor effort to just multiply the one equation by two, and adding them together to eliminate the yvariable
 2 years ago

precal Group TitleBest ResponseYou've already chosen the best response.0
I would do elimination but Cramer's rule is one of the fastest way to solve the system
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
Thank You but you can please help me on the problem too
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
Can you also tell what you did like step by step please and thank you :)
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.2
Sure. First multiply the second equation by 2: x2: 9x + 2y = 69 > 18x + 4y = 138 List the two equations and add: 6x 4y = 54 18x + 4y = 138 __________________ 12x + 0y = 84 12x = 84 x = 7 Now sub x back into any of the equations: 6(7)  4y = 54 42  4y = 54 4y =  12 y = 3 so x=7 and y = 3
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
you know how like on the second thing that you did well what goes in the middle of 6x  4y
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
I can just use this and this is correct right??
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.2
nothing, I just spaced it so it is kinda in the same line of sight
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.2
yes, you can. It's correct.
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
thank you soo much
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
wait what proccess is this??
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
substittution??? haha i spelled it wrong lol
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.2
Nope this is elimination. My pleasure
 2 years ago

GabriellaGurl101 Group TitleBest ResponseYou've already chosen the best response.0
Okay thank you
 2 years ago
See more questions >>>
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.