Q: 2x - y - 4 = 0
3x + y - 9 = 0
What is the solution set of the given system?

A: our answer is: x = 137/41 or 3.34

scijoe21|Points 1965|

Question

Asked 7/23/2012 7:23:53 PM

Updated 9/13/2014 2:26:09 AM

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The solution for 2x - y - 4 = 0 , 3x + y - 9 = 0 is x = 13/5, y = 6/5 .

Two equation add , we get 2x+3x = 13 , x = 13/5

Put x = 13/5 in 2x -y -4 =0

2*13/5 -y = 4

y = 26/5 - 20/5

y = 6/5 .

Two equation add , we get 2x+3x = 13 , x = 13/5

Put x = 13/5 in 2x -y -4 =0

2*13/5 -y = 4

y = 26/5 - 20/5

y = 6/5 .

Added 9/13/2014 2:26:09 AM

Simplify (3x + 5) + (2x - 9) - (4x + 3). **Weegy:** (3x + 5) + (2x - 9) - (4x + 3) = x - 7. [smile] (More)

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Expert Answered

Updated 3/1/2014 5:52:16 AM

1 Answer/Comment

(3x+5)+(2x-9)-(4x-3)=x-7

3x +5+2x-9-4x-3=x-7

=x-7=x-7

collect the like terms.

x-x=-7+7

x=0.

3x +5+2x-9-4x-3=x-7

=x-7=x-7

collect the like terms.

x-x=-7+7

x=0.

Added 7/22/2012 6:23:14 PM

This answer has been flagged as incorrect.

Simplify {n - 1 - [n - 1 - (n - 1)]}. **Weegy:** For arithmetic sequences, the common difference is d. (More)

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Updated 232 days ago|11/2/2016 2:46:13 AM

1 Answer/Comment

Multiply (6z2 - 4z + 1)(8 - 3z).
**Weegy:**
(6z^2 - 4z + 1)(8 - 3z)
= -18z^3 + 12z^2 - 3z + 48z^2 - 32z + 8
= -18z^3 + 60z^2 - 35z + 8
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Updated 4/8/2016 12:03:54 AM

0 Answers/Comments

Factor x2 + xy - 2x - 2y.
(x + 2)(x - y)
(x + y)(x - 2)
(x - y)(x + 2) **Weegy:** b.(x - y)(x + 2)
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Expert Answered

Updated 7/28/2014 7:18:07 PM

1 Answer/Comment

Factor completely.
5x2 + 10x - 40
5(x - 4)(x + 2)
5(x - 2)(x + 4)
5(x - 4)(x - 2)

Question

Expert Answered

Updated 5/26/2014 4:48:57 PM

1 Answer/Comment

5x^2 + 10x - 40 = 5(x^2 + 2x - 8) = 5(x - 2)(x + 4)

Added 5/26/2014 4:48:56 PM

This answer has been confirmed as correct, not copied, and helpful.

Confirmed by andrewpallarca [6/1/2014 7:48:09 AM]

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