Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Calcmathlete
Group Title
Let the solution (x, y, z) satisfy the following equations: x + y + z = 1, xy + xz + yx = 17, xyz = 15. If x < y < z, what is the value of: x  2y + 4z?
 one year ago
 one year ago
Calcmathlete Group Title
Let the solution (x, y, z) satisfy the following equations: x + y + z = 1, xy + xz + yx = 17, xyz = 15. If x < y < z, what is the value of: x  2y + 4z?
 one year ago
 one year ago

This Question is Closed

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.0
And this is supposed to be a speed math question as in you should be able to do this in like 30 seconds...not sure how to do it though...
 one year ago

NotTim Group TitleBest ResponseYou've already chosen the best response.0
its also...vector like...
 one year ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.0
Seriously? That's like 5 questions that pertain to vectors when I have not learned them... :/
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.2
well for starter the biggest lead is xyz=15 that shows me that there has to be a 1,3 and 5 involved
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.2
next x+y+z=1 5+3+1=1
 one year ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.0
But when you plug it into xy + xz + yx, it doesn't work...
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.0
I think that also fails the x < y < z
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.0
since in your case y > z
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.2
well no u wld just switch around the variables that is no big deal
 one year ago

Hero Group TitleBest ResponseYou've already chosen the best response.0
Maybe let x = 5, y = 1, z = 3
 one year ago

KingGeorge Group TitleBest ResponseYou've already chosen the best response.1
Did you mistype the problem? Or is it correct as written? Should it be "xy + xz + yz = 17" instead of "xy + xz + yx = 17?"
 one year ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.0
That's what it says on the document...thinking it's a typo though...
 one year ago

Calcmathlete Group TitleBest ResponseYou've already chosen the best response.0
Alright. I think it is just a typo. Thanks swiss!
 one year 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.