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plleeeaseee help!
Solve using two different methods. Explain which method you found to be more efficient.
1. 3x  9y = 3
6x  3y = 24
2. 7x3y=20
5x+3y=16
3. y= 1/2x  6
2x +6y=19
 one year ago
 one year ago
plleeeaseee help! Solve using two different methods. Explain which method you found to be more efficient. 1. 3x  9y = 3 6x  3y = 24 2. 7x3y=20 5x+3y=16 3. y= 1/2x  6 2x +6y=19
 one year ago
 one year ago

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jhonyy9Best ResponseYou've already chosen the best response.1
1 multiplie first equation by 2 so this will be by elimination method 6x +18y =6 6x 3y = 24  0 15y = 30 y= 30/15 = 2 6x 3*(2) = 24 6x +6 = 24 6x = 30 x= 30/6 = 5 x=5 y=2
 one year ago

jhonyy9Best ResponseYou've already chosen the best response.1
2 by elimination method just you need assuming these two equation 7x3y=20 5x+3y=16  12x 0 =36 x=36/12 =3 x=3 5*3 +3y=16 15 +3y=16 3y=1 y=1/3 x=3 y=1/3
 one year ago

jhonyy9Best ResponseYou've already chosen the best response.1
3. y=1/2x 6 so than 2y=x12 so x2y=12 and 2x+6y=19 so than the sistem will be x2y=12 2x+6y=19 solve by elimination method so multiplie first equation by 2 ,than will get 2x+4y=24 2x+6y=19  assum 0 10y=5 y= 5/10 =1/2 x2y=12 substitute y=1/2 x2(1/2)=12 x+1=12 x=11 x=11 y=1/2
 one year ago

teddygirlBest ResponseYou've already chosen the best response.0
Those are all elimination methods. I need different methods.
 one year ago
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