Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Solve the system and explain what the results mean according to your scenario.
2x + y = 9
3x + 4y = 26
 2 years ago
 2 years ago
Solve the system and explain what the results mean according to your scenario. 2x + y = 9 3x + 4y = 26
 2 years ago
 2 years ago

This Question is Closed

lilg132Best ResponseYou've already chosen the best response.0
2x + y = 9 3x + 4y = 26 2x + y = 9 (multiply by 3) 3x + 4y = 26 (multiply by 2) so we have the same value for x and we can cancel it out 6x + 3y = 27 6x + 8y = 52 5y = 25 y = 5 now use this to work out x
 2 years ago

lilg132Best ResponseYou've already chosen the best response.0
so just so you understand i will show you how to 2x + y = 9 3x + 4y = 26 so we know the value of y = 5 2x + 5 = 9 rearrange 2x = 9  5 2x = 4 x = 2 to check use these answers in the second equation x = 2 y = 5 3(2) + 4(5) = 26 6 + 20 = 26 dont forget to click good answer :)
 2 years ago

neverforgetvivisteeBest ResponseYou've already chosen the best response.2
you can use elimination of substitution. in this case it's easier to use substitution. subtract 2x from both sides of the first equation to get the y alone y = 9  2x now, you want to plug what y equals into the second equation 3x + 4 (9  2x) = 26 use the distributive property with the 4 3x + 36  8x =26 combine like terms 5x + 36 = 26 subtract 36 from both sides 5x = 10 now divide x = 2 now, with x = 2 plug it into the original equation 3 * 2 + 4y = 26 solve like a regular algebra problem 6 + 4y = 26 4y = 20 y = 5
 2 years ago

neverforgetvivisteeBest ResponseYou've already chosen the best response.2
dang you beat me to it i really need to work on my typing speed
 2 years ago

neverforgetvivisteeBest ResponseYou've already chosen the best response.2
in the first sentence i meant you can use elimination or substitution
 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.