A community for students.
Here's the question you clicked on:
 0 viewing

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know what two methods there are?

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0No well one is the matrix method i think

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0There is elimination and substitution

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0I just need to know how to do the problem

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok for A) 3x9y=3 6x3y=24 Solve the first equation for x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0add 9y on both sides

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0ok like thisdw:1436908249151:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0so 3+9=12dw:1436908316517:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0at the bottom those are 3's

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so the first equation look like this. 3x=3+9y

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0great so divide 3 by both sides

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0k so when simplified we get x=1+3y

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0where you get that from?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436908850564:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0plug the equation into the second one like this 6(1+3y)3y=24

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436909266839:dw which one i isolate?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so distribute out the 6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0when you do that you get 6+18y3y=24

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436909525038:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436909655173:dw right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436909811890:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0OH that kinda looks easy so the first equation is 2 right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no there's more lol y=2 now plug in 2 for y in the first equation

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0Can you show me i dont know where to put it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436910047668:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0so now i just put that the answer is 2 and 5?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes but write it like this (5,2)

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0OKAY DANG THANK YOU! I BEEN WORKING ON THIS FOR 2 DAYS LOL

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0can you help me with part B?

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0thanksz! do u still got the problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes we are going to solve this one using elimination because it is quicker for this problem we solved the last one using substitution

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0did we use elimination for the last one i think it was substitution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no we used substituion

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we are going to solve this one together like this dw:1436910768080:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no the 3y cancels out

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436911023546:dw and then we just move over the rest of the problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes! add the two equations together like this dw:1436911155428:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0and then we put x=3 in the problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes plug it into either equation you can choose

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok dw:1436911428534:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so your answer for part b is dw:1436911673328:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0np do you want help with part c?

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0OH yea i almost forgot lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol We are going to solve this one using substitution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I substituted y into the second equation dw:1436911880872:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0not quite we have to distribute the 6 like this dw:1436912140467:dw I multiplied the six into the parenthesis

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now we can add 36 to each side

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436912247899:dw RIGHT

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so whats your new problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Correct dw:1436912410251:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now plug in the x value into the first equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436912554603:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0so +6 on both ends right

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0actually we can just solve this by multiplying 11 and (1/2) then subtracting 6 dw:1436912738685:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the answer to part c is dw:1436912878418:dw

Phebe
 one year ago
Best ResponseYou've already chosen the best response.0well ima go so CYA~ thanks for all tha helpz
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.