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anonymous
 5 years ago
Solve by elimination method:
9x9y=36
7y3x=14
Another problem:
0.3x0.2y=4
0.4x+0.5y=1
anonymous
 5 years ago
Solve by elimination method: 9x9y=36 7y3x=14 Another problem: 0.3x0.2y=4 0.4x+0.5y=1

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Hello i will help you today

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0.3x  .2y = 4 >(1) .4x + .5y = 1 >(2) (1)x5 you get 1.5x  y = 20 (2)x2 you get .8x + y = 2 Add up these two, you get 2.3x = 22 x = 220/23 Substitute x back into any equation, you get y = 130/23 and 5x +3y = 11  (1) 7x  2y =19  (2) (1)x2 you get 10x + 6y = 22 (2)x3 you get 21x  6y = 57 Add the two, you get 31x = 35 So x = 35/31 Substitute x back into any equation, you get y = 172/31 and 9x  9y =36  (1) 7y  3x = 14  (2) (2)x3 you get 9x + 21y = 42 Add this to (1), you get 12y = 6, so y = 1/2 Substitute y back into any equation, you get x = 7/2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0tell me if that helps at all

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the one problem i think you wrote wrong it was supposed to be 5x+2y=7 7x3y=11

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wait nevermind i wrote it wrong

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok here we go 9x9y=36 => x  y = 4 => x = 4+y 7y3x=14 => 7y  3(4+y) = 14 7y  12  3y = 14 4y = 2 y = 1/2 x = 41/2 = 7/2 (x,y) = (7/2, 1/2)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0would you mind helping me on a few more

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.05x+2y=13 7x3y=17 0.05x+0.25=11 0.15x+0.05y=12

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Substitution method: 7m+n=46 m3n=16

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Im really having trouble with the substitution one

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0umm i cant to seem to get this won hold on and i am going to have some won help if that is ok with you

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0well what would the elimination problems be i sent you

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok is this it tight here Start by multiplying the first equation by 2, and the second by 3: 10x + 6y = 22 21x  6y = 39 Now add the two together, you y's cancel out , "eliminating" it. 21x = 17 x = 17/21 5x + 3y = 11 5(17/21) + 3y = 11 85/21 + 3y = 11 85 + 63y = 231 63y = 146 y = 146 / 63

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay thanks how about 0.05x+0.25y=11 0.15x+0.05y=12

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok here we go 5x + 25 y = 1100 15 x + 5 y = 1200  15x  75y =  3300 15x + 5y = 1200ADD  70 y =  2100 y = 30 5x + 750 = 1100 5x = 350 x = 70 x = 70 , y = 30

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wow thanks your like a lifesaver haha

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0this is done by elimination

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.05x+5y=11 multiply by 2 ==> 10x + 10y = 22 7x2y=17 multiply by 5 ===> 35x  10y = 85 Add the two equations: 10x + 35x = 22+85 45x = 63 x = 63/45 = 7/5 substitute into original equation: 5(7/5) + 5y = 11 5y = 18 y = 18/5 Solution set: (x,y) = (7/5, 18/5) ok do this help

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0it told me i was wrong

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what r ypu working on so i know i might know why

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0its a math program and I have to enter the answers in and it lets me know if im wrong or not then submits it to my teacheer part of my homeschool

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok i do home schooling to i think i know what programe you talking about

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0umm that i weird i woundr were we went wrong

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i dunno im trying to figure it out too

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ill rewrite the problem

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok i think i got it Let's just multiply everything by 100 to eliminate the decimals. 5x + 25y = 1100 15x + 5y = 1200 Multiply the first equation by 3 15x + 75y = 3300 15x + 5y = 1200 Subtract the second equation from the first 70y = 2100 7y = 210 y = 30 15x + 5(30) = 1200 15x + 150 = 1200 15x = 1200 150 15x = 1050 x = 1050/15 = 70 Let's check in the original equations. 0.05(70) + 0.25(30) = 3.50 + 7.50 = 11 check. 0.15(70) + 0.05(30) = 10.50 + 1.50 = 12 check. 8 months ago Report Abuse

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0srry about the 8 month ago i did that srry

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i was working on something els and it got out up there

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0did you see the word problem i posted could you help me with that

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0did you ever figure out that one problem for me
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