A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 11 months ago
use substitution method in system of equation to solve :
2xy=10
2x2y=4
a) (2.1)
b) ( 7,4)
c) ( 2.2)
d) ( 8,6)
 11 months ago
use substitution method in system of equation to solve : 2xy=10 2x2y=4 a) (2.1) b) ( 7,4) c) ( 2.2) d) ( 8,6)

This Question is Closed

mathmale
 11 months ago
Best ResponseYou've already chosen the best response.0Pretty please include ALL of the instructions when you post a problem. For example, in this case: "use substitution to solve the following system of linear equations." To get you started: Please solve the first equation for 2x.

RolyPoly
 11 months ago
Best ResponseYou've already chosen the best response.0From the first equation, make y as the subject. That is 2xy=10 2xy + y=10 + y 2x = 10 + y 2x10=10 + y  10 2x  10 = y That is y = 2x10. Then substitute y = 2x10 into the second equation to solve for x. Can you do it?

geo12345679789
 11 months ago
Best ResponseYou've already chosen the best response.0i can try thanks

RolyPoly
 11 months ago
Best ResponseYou've already chosen the best response.0Tell me what you have got when you finish :)

geo12345679789
 11 months ago
Best ResponseYou've already chosen the best response.0sorry got distracted with something else . its (8,6)

mathmale
 11 months ago
Best ResponseYou've already chosen the best response.0Hope it's not confusing for y ou, Geo, to have two different people suggesting that you try two different things. I suggested that you solve the first equation for 2x; RolyPoly suggested you solve it for y. Actually, either approach will work fine. Toss a coin and decide that way which to use on this particular problem. (RolyPoly's is the more traditional.)

mathmale
 11 months ago
Best ResponseYou've already chosen the best response.0Substitute your x=8 and your y=6 back into the original equations. Are they both "true"? If so, your solution actually is a solution.

geo12345679789
 11 months ago
Best ResponseYou've already chosen the best response.0its fine , it was right thanks both of y'all

mathmale
 11 months ago
Best ResponseYou've already chosen the best response.0Good going! Congrats!
Ask your own question
Ask a QuestionFind 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.