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Solve by elimination. x + y = 30 x - y = 6
x+y=30_x-y=6... x=-y+30_x-y=6... x=-y+30_(-y+30)-y=6.... x=-y+30_-y+30-y=6... x=-y+30_-2y+30=6... x=-y+30_-2y=-30+6... x=-y+30_-2y=-24... x=-y+30_-(2y)/(-2)=-(24)/(-2)... x=-y+30_y=-(24)/(-2)... x=-y+30_y=12... x=-(12)+3 [ 0_y=12... x=-12+30_y=12... x=18_y=12... x=18 y=12 is the answer. ]
Expert answered|OxTornado007|Points 6629|
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Asked 1/28/2013 11:43:04 AM
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x = -2y + 1 x = y - 5 a (-3,2) b (1,6) c (2,7) d Infinitely Many Solutions e No Solution
Weegy: x=-2y+1_x=y-5... x=-2y+1_(-2y+1)=y-5... x=-2y+1_-2y+1=y-5... x=-2y+1_-2y+1-y=-5... x=-2y+1_-3y+1=-5... x=-2y+1_-3y=-1-5... x=-2y+1_-3y=-6... x=-2y+1_-(3y)/(-3)=-(6)/(-3)... x=-2y+1_y=-(6)/(-3)... x=-2y+1_y=2... x=-2(2)+1 [ _y=2... x=-4+1_y=2... x=-3_y=2... So a) (-3,-2) is the answer. ] (More)
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Asked 1/24/2013 1:38:11 PM
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User: What is the solution for the system for #1 on the worksheet? y = -2x + 4 2x - 2y = 4
Weegy: y = -2x + 4 2x - 2y = 4 2x - 2(-2x + 4) = 4 2x + 4x - 8 = 4 6x = 4 + 8 6x = 12 x = 12/6 x = 2 y = -2(2) + 4 y = -4 + 4 y = 0 Solution set: (2, 0) User: What is the slope and y-intercept for each equation in the system given? 1.) y = -2x + 4 2.) 2x - 2y = 4 a 1.) m = -2, y-int (0,4) 2.) m = 2, y-int (0,2) b 1.) m = -2, y-int (0,4) 2.) m = 1, y-int (0,-2) c 1.) m = -2, y-int (0,4) 2.) m = -1, y-int (0,2) (More)
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Expert Answered
Updated 6/27/2015 12:19:08 PM
1 Answer/Comment
1.) y = -2x + 4
m = -2, y-int (0, 4)

2.) 2x - 2y = 4
(-2y = -2x + 4)/(-2)
y = x - 2
m = 1, y-int (0, -2)
Added 6/27/2015 12:19:08 PM
This answer has been confirmed as correct and helpful.
In question #2, it says to solve the system by substitution. x = -3y - 8 -2x - 4y = 9 Which is the correct equation after the substitution is made? a 6y- 8 - 4y = 9 b -2(-3y - 8) - 4y = 9 c -2x = 4(-3y - 8) = 9
Weegy: x=-3y-8_ -2x-4y=9 x=-3y-8_ -2(-3y-8)-4y=9... So B) -2(-3y - 8) - 4y = 9 is the answer. (More)
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Asked 1/31/2013 11:44:42 AM
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For question #4 on the worksheet: You will need to combine ______ kg of fruit drink A and ______ kg of fruit drink B
Weegy: The kernel of maize has a pericarp of the fruit fused with the seed ... and the need to ... [ ^ Calculated from 185 bushels per acre at USDA 25.4 kg per ... ] User: 4.) Suppose you want to combine two types of fruit drinks to create 24 kg of a drink that will be 5% sugar by weight. Fruit drink A is 4% sugar by weight, and fruit drink B is 8% sugar by weight. How much of each type of fruit drink will you need to use? Use any method to solve. You will need to combine ______ kg of fruit drink A and ______ kg of fruit drink B Weegy: sugar + sugar = sugar 0.04x + 0.08(24-x) = 0.05*24 - - - - - Multiply thru by 100 to get: 4x + 8*24 - 8x = 5*24 -4x = -3*24 x = 18 kg (amt. of 4% drink) - - 24-x = 6 kg (amt. of 8% drink) (More)
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Asked 1/31/2013 1:44:52 PM
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