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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Expert Answered

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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Updated 6/27/2015 12:19:08 PM

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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)

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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Expert Answered

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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Expert Answered

Asked 1/31/2013 1:44:52 PM

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