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Leto [7]
3 years ago
9

Solve, using linear combination. 11x + 4y = 18 3x + 4y = 2

Mathematics
2 answers:
antoniya [11.8K]3 years ago
8 0
11x + 4y = 18
3x + 4y = 2.....multiply by -1
----------------
11x + 4y = 18
-3x - 4y = -2 (result of multiplying by -1)
---------------add
8x = 16
x = 16/8
x = 2

3x + 4y = 2
3(2) + 4y = 2
6 + 4y = 2
4y = 2 - 6
4y = -4
y = -4/4
y = -1

solution is : (2,-1)
tensa zangetsu [6.8K]3 years ago
4 0
11 x + 4 y = 18
3 x + 4 y = 2 

11 x + 4 y = 18 
- 3 x - 4 y = - 2 

8 x = 16 
x = 2 

11 x + 4 y = 18
22 + 4 y = 18
4 y = 18 - 22 
4 y = - 4 
y = - 1 

S ( - 1 ; 2) 

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it is epuivalet

5 0
3 years ago
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The straight line L has the equation 4y=5x+3
solniwko [45]

Answer:

y = -4/5x + 2/5

Step-by-step explanation:

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6 0
3 years ago
Which products result in a difference of squares? Check all that apply.
Amanda [17]

Answer:

2nd - (w - 5)(w + 5)

4th - (-4v - 9)(-4v + 9)

Step-by-step explanation:

1. The first option shows an expression multiplied by its opposite(x -1), so therefore, it does not show the difference of squares

2. The second option does show the difference of squares because it is in the form (a + b)(a - b)

3. The third option is just a square because the same expression is multiplied by itself.

4. The fourth option is the difference of squares because it is in the form (a + b)(a - b). a equals -4v and b equals 9 in this case.

5. The fifth option is not the difference of squares. No term in common in both expressions

6. The sixth option is just a square because the same expression is multiplied by itself.

In all, there are two options that are the difference of squares, the 2nd and 4th.

5 0
3 years ago
A square and a rectangle have the same perimeter. Find the side lengths of each figure.
aliina [53]
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Side lengths:
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Hope that helps! Stay safe!
4 0
3 years ago
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