Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
teddygirl
Group Title
plleeeaseee help!
Solve using two different methods. Explain which method you found to be more efficient.
1. 3x  9y = 3
6x  3y = 24
2. 7x3y=20
5x+3y=16
3. y= 1/2x  6
2x +6y=19
 2 years ago
 2 years ago
teddygirl Group Title
plleeeaseee help! Solve using two different methods. Explain which method you found to be more efficient. 1. 3x  9y = 3 6x  3y = 24 2. 7x3y=20 5x+3y=16 3. y= 1/2x  6 2x +6y=19
 2 years ago
 2 years ago

This Question is Closed

jhonyy9 Group TitleBest ResponseYou've already chosen the best response.1
1 multiplie first equation by 2 so this will be by elimination method 6x +18y =6 6x 3y = 24  0 15y = 30 y= 30/15 = 2 6x 3*(2) = 24 6x +6 = 24 6x = 30 x= 30/6 = 5 x=5 y=2
 2 years ago

jhonyy9 Group TitleBest ResponseYou've already chosen the best response.1
2 by elimination method just you need assuming these two equation 7x3y=20 5x+3y=16  12x 0 =36 x=36/12 =3 x=3 5*3 +3y=16 15 +3y=16 3y=1 y=1/3 x=3 y=1/3
 2 years ago

jhonyy9 Group TitleBest ResponseYou've already chosen the best response.1
3. y=1/2x 6 so than 2y=x12 so x2y=12 and 2x+6y=19 so than the sistem will be x2y=12 2x+6y=19 solve by elimination method so multiplie first equation by 2 ,than will get 2x+4y=24 2x+6y=19  assum 0 10y=5 y= 5/10 =1/2 x2y=12 substitute y=1/2 x2(1/2)=12 x+1=12 x=11 x=11 y=1/2
 2 years ago

teddygirl Group TitleBest ResponseYou've already chosen the best response.0
Those are all elimination methods. I need different methods.
 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.