A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
Pleasee help x.x 1. Solve the system by elimination
2x+2y+3z=0
2xy+z=3
2x+3y+3z=5
2.Solve using substitution
xyz=8
4x+4y+5z=7
2x+2z=4
Thanks for any help :o
anonymous
 3 years ago
Pleasee help x.x 1. Solve the system by elimination 2x+2y+3z=0 2xy+z=3 2x+3y+3z=5 2.Solve using substitution xyz=8 4x+4y+5z=7 2x+2z=4 Thanks for any help :o

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Heya lol.. So any help?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Agh that doesn't help me at all x.x

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0O.o I most certainly cannot x.x

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1Megan, your homework makes me sleepy

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0I just need to be able to show all the correct steps with these 2 x.x they are worth a lot of points Dx

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1I'm willing to help you with the constraint and profit problems, but for the system of three equations, I'd rather use matrices.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0I'm supposed to be learning how to do that too x.x

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1I'm not a teacher. I will post the full solutions to the problems, which will explain the steps that way. However, if you have any questions about anything, I can try to answer. What I refuse to do is "guide" student to an answer since, in a way, it wastes time.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.08x8y=16 6x9y=108 With this problem I'm supposed to solve using matrices :P

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1Well, before you do anything, reduce both first.

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1Divide the first equation by 8 and the second by 3

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0oh oops the first one =16 my bad there.

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1I'm just going to to respond to one of the previous questions you posted.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0With Question 1. A system of elimination requires to to add or subtract two equations together to eliminate a variable. Since you have three equations, you will want to bring that down to two equations with two variables. If you minus the second equation from the first equation: 2x+2y+3z=0 () 2xy+z=3 (=) 3y+2z=3 Now we want to create a second equation that only has the two variables y and z. We also want to create a second equation that is different from the first one. To do this we need to involve the 3rd equation. In this case we will add the first and the last equations together. 2x+2y+3z=0 (+) 2x+3y+3z=5 (=) 5y+6z=5 Now we have two equations to solve together by adding or subtracting. But in this case we will have to alter equation 2 (multiply all of it by 3) so that we can subtract one from 2. 3y+2z=3 (x3) 9y+6z=9 Now we can subtract. 5y+6z=5 () 9y+6z=9 (=) 4y=4 y=1 Now that we have a value of y we can substitute that back into our equations to get other values. 3(1)+2z=3 3+2z=3 z=0 Now sub z=0 and y=1 back into equation 1. 2x+2(1)+3(0)=0 2x+2=0 x=1

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Thank you so much Henry (: Your awesome
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.