A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
hey i have 2 quick questions if anyone can help
anonymous
 one year ago
hey i have 2 quick questions if anyone can help

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A student is trying to solve the system of two equations given below: Equation P: y + z = 6 Equation Q: 3y + 4z = 1 Which of the following is a possible step used in eliminating the yterm?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is this type a typed answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(y + z = 6) ⋅ 4 (3y + 4z = 1) ⋅ 4 (y + z = 6) ⋅ −3 (3y + 4z = 1) ⋅ 3

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0To eliminate a variable, you need to add the equations or multiples of the equations in which the same variable in both equations will add to zero.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0In order to elminiate any term from an equation when you have multiple equations .. U've to multiply one with the first equation that will result in a "zero" when you add them up ... In Ur case, this would be the third choice :D Let me know if U got it :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh i get it that makes sence

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0You want to eliminate y. The second equation has 3y. If you could change the first equation to have 3y, that would do it. Does any choice change the first equation so that the y term becomes 3y?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry I meant to multiply by a constant factor :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ya thats what i try but i kept getting stuck

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can u guys help me out with one more

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A set of equations is given below: Equation E: c = 2d + 1 Equation F: c = 3d + 7 Which statement describes a step that can be used to find the solution to the set of equations? Equation F can be written as c = 3(c − 1) + 7. Equation F can be written as c = 2(c − 7) + 1. Equation F can be written as d + 1 = 3d + 7. Equation F can be written as 2d + 1 = 3d + 7.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Just find d in term of c from Equation E and then plug the value in the other equation or find c in terms of d and do same steps :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Let's try to get c in terms of d .. To do so, U've to get c in one hand and d on the other hand in one of the equations let's say equation E .. we already have that done for us .. then plug c in equation F and see if any of the answers is what we have got

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Second problem. Look at the given equations. Notice they are both solved for c. Set them equal to each other. If c = 2d + 1 and c = 3d + 7, then 2d + 1 must equal 3d + 7 Which choice shows this?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0If none of them is what we got .. Then we are now sure that the answer contains no d's ! So we try the other way .. Try to get d in terms of c from Equation E and plug it in equation F as well as what we have did in the last step for c in terms of d

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0dw:1437419612159:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Replace the c of equation F with 2d + 1, since from equation E we know that c = 2d + 1. Answer is choice D.
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.