A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
how do you get the answer to (xy=5
(x+4y=10
anonymous
 5 years ago
how do you get the answer to (xy=5 (x+4y=10

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0all i know is you use substitution

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0add the two equations and post what you got.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what do you mean by add them

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0steps: xy=5 x+4y=10 despejas x x=5+y 5y+4y=10 3y=5 y=5/3 ahora en xy=5 x(5/3)=5 x=10/3

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0xy = 5 > Equation 1 x+4y = 10 > Equation 2 Add equations 1 and 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh also if it helps im only in 8th grade

shadowfiend
 5 years ago
Best ResponseYou've already chosen the best response.0By `add' he means basically add each part (the parts with x, the parts with y, and the parts with neither) in each equation, and see what the resulting equation is.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No shadow fiend. The problem is different. These answers were getting jumbled up, with another post

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if (3 x 4 ) = 12 and (5 x 4) = 20, then when we add the equations we get (3 x 4) + (5 x 4) = 12 + 20 12 + 20 = 32 32 = 32. so it checks out. similarly add your equations,

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0meaning (xy) +(x+4y) = 5 + 10

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wow this is even more confusing now

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what is confusing about this?

shadowfiend
 5 years ago
Best ResponseYou've already chosen the best response.0So, norbeybarajas gave another good answer, both will lead you to the same path. If you add the two equations up, you'll see that the x disappears and you can solve for y.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok thx for the answers not confusing any more

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0do you understand that if a = b and c = d, then a+c will be equal to b+d?

shadowfiend
 5 years ago
Best ResponseYou've already chosen the best response.0Rock it. Make sure you click `good answer' next to the answers that were helpful :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay, so that is exactly what I did in your equation. I saw that one equation had x and the other equation had x. so I knew that if i added them up, the x will cancel each other out, leaving me only with y. which means i can solve for y.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0once I solve for y, all i need to do is substitute it in one of the equations and get x.
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.