A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
consider this systems of equations
2/3 x +3/5 y =12
5/2 y  3x=6
the expression that gives the value of x is...
the solution for the systems of equations...
anonymous
 one year ago
consider this systems of equations 2/3 x +3/5 y =12 5/2 y  3x=6 the expression that gives the value of x is... the solution for the systems of equations...

This Question is Closed

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0Do you know how to solve simultaneous equations?

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0A) 2/3 x +3/5 y =12 B) 3x +5/2 y =6 One way is to solve for x in one equation

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0B) 3x = 5/2 y + 6 We divide both sides by 3 x = 5/6 y 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0options the expression that gives the value of x is... (5A/3)+(2B/5), (3A/5)(5B/2), (5A/2)+(3B/5), (5A/3)(2B/5), (3A/2) + (B/3)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2mcfizzy STOP! What is that attachment?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the solution to the systems of equations is (1118/47, 396/47) (33/13, 50/13) (99/13, 150/13) (8,12)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@UsukiDoll what's wrong?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2I've seen this poster (mcfizzy) posting an attachment that could be malicious. I've sent a report.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay, I probably shouldn't click on the attachment then. I'll send a report too.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2yeah.. under his profile all of his questions answered has spam with that attachment. everyone please report this.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I could use help with this problem, I'm still very confused

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2@wolf1728 is there to help. I have to warn everyone else about this issue as this is serious and against terms and conditions.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@wolf1728 I also need the expression that gives the value of x

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0Kaelyn  you do not know how to solve these so why do you need the expression for value of x ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0because the question asks me to find the expression that finds the value of x, I don't want you to give me the answer just help me find the right one

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.0I think you should find someone else to help. I'm quitting for the moment.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay thank you for your help

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2go for it @waterineyes as long as it's not a direct answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0go ahead @waterineyes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and @UsukiDoll I agree don't give the answer to me just help me find the answer myself

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, don't let our interaction stop anywhere, just reply if you know or not, just be with me...

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{ 2 }{ 3 }x+\frac{ 3 }{ 4 }y=12\]\[\frac{ 5 }{ 2}y3x=6\]frm equation 2,\[\frac{ 5 }{ 2 }y=6+3x\]\[y=\frac{ 2(6+3x) }{ 5 }\]now sub y=2(6+3x)/5 in eq 1 \[\frac{ 2 }{ 3 }x+\frac{ 3 }{ 4 }(\frac{ 2(6+3x) }{ 5 })=12\]simplify and solve for x we get \[\frac{ 2 }{ 3 }x+\frac{ 36+18x }{ 20 }=12\]\[\frac{ 40x +108+54x}{ 60 }=12\]\[\frac{ 94x+108 }{ 60 }=12\]multiply both side of the equation we get..\[94x+108=720\]\[94x=720108\]\[x=612/94\]\[x=6.510638\]...so y =...\[y=\frac{ 2(6+3(6.510638)) }{ 5 }\]\[y=10.21276\]..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay understanding so far

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2_ *throws a water bottle @waterineyes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Both our equations are in fraction form, we should simplify them to make a good looking equation first... Do you know how to take LCM?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hell, my net stopped working.. :(

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes I know how to take LCM

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Like in first equation, 15 is the LCM, so you can multiply whole equation by 15...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@LynFran I am afraid you are right everywhere, but you have taken wrong fraction in very first equation,, 3/5 is good, not 3/4.. if I am not blind then.. :P Your method is good.. :)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2if we find our y and x, keep it in fraction form. ... decimals are a pain to deal with T_T

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2*throws a canteen at @waterineyes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Guys lets not throw things...

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1o i see im sleepy lol @waterineyes goodnight u guys

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(10x + 9y = 180\)  1 This you got?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2sigh....... the second equation is easier to deal with 2/3 x +3/5 y =12 5/2 y  3x=6 \[\frac{2}{3}x+\frac{3}{5}y=12\] \[\frac{5}{2}y3x=6\] so multiply 2 throughout the entire second equation \[\frac{5}{2}y3x=6\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And this way your second equation becomes: \(5y  6x = 12\)  2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Kaelyn78 are you getting how I formed these two equations?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.210x + 9y = 180 5y6x=12

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thanks.. Again and again I was going above to see these equations, as you are posting in between so things are going above..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you can write the second equation, other way round, x first and then y: \(10x + 9y = 180 \\ 6x + 5y = 12\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[[10x + 9y = 180 ] \times 6 = 60x + 45y = 108 \\ [6x + 5y = 12 ] \times 10 = 60x + 50y = 120\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I have multiplied the coefficient of x in second equation with first equation and same for second equation.. are you getting this step?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now you just need to add those equations...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\cancel{60x} + 45y = 1080 \\ \cancel{60x} + 50y = 120 \\  \\95y = 2200\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry, that is 1080 and not 108...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Getting previous step?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now find y, by dividing by 95 both the sides..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait, I am just double checking it.. Let me take copy and pen too..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It is certainly a wrong...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.09 multiplied by 6 is 54 not 45, just keep eyes on what I am doing, I can be wrong anywhere in writing digits. :P

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0After Multiplying 6 and 10 the equations you will get are: \(60x + 54y = 1080 \\ 60x + 50y = 120\) Form this you will get: \(104y = 2200\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.01080 + 120 = 1200.. What has happened to me today.. :(

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@waterineyes aw sorry I can't help with that

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(104y = 1200\) Now just find y by cancelling out the things..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if it's any consolation I would have gone certifiably insane trying to do this all by myself

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[y = \frac{1200}{104}\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2gotta reduce that fraction

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do not use calculator, just cancel it out with 8, you will get in fraction..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now, put the fraction in any one of the equation above to find x...

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2\[y=\frac{150}{13}\] 5y6x=12 plug in y in this equation and solve for x

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2what are you talking about? I didn't post that.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.2\[5(\frac{150}{13})6x=12\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Kaelyn78 what you got for y? You break the interaction?? :(

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, I gotta go now. If any doubt, Doll will tell you, or I will when I login next.. :) Solving these types of equations is really an easy task, just learn the concept, rest is ajiffy work..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm going to bed, thanks everyone, goodnight
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.