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lakkis [162]
3 years ago
13

Select the correct answer.

Mathematics
1 answer:
eimsori [14]3 years ago
8 0

Answer:

A. x=3, y= -6

Step-by-step explanation:

x - 2y = 15

2x + 4y= -18

<em>Solving for x</em>

x-2y=15

<em>Subtract x from both sides</em>

-2y= -x+15

<em>Multiply both sides by -1</em>

2y=x-15

<em>Multiply both sides by 2</em>

4y=2x-30

2x+4y= -18

<em>Subtract 2x from both sides</em>

4y= -2x-18

<u>Combine equations:</u>

-2x-18=2x-30

<em>Add 2x to both sides</em>

-18=4x-30

<em>Add 30 to both sides</em>

12=4x

4x=12

<em>Divide both sides by 4</em>

x=3

Solving for y

x-2y=15

<em>Add 2y to both sides</em>

x=2y+15

<em>Multiply both sides by 2</em>

2x=4y+30

2x + 4y= -18

<em>Subtract 4y from both sides</em>

2x= -4y-18

<u>Combine equations:</u>

-4y-18=4y+30

<em>Add 4y to both sides</em>

-18=8y+30

<em>Subtract 30 from both sides</em>

8y= -48

<em>Divide both sides by 8</em>

y= -6

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Answer:

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Step-by-step explanation:

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to determine the answer in this question :

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k = 6400

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Assoli18 [71]
Answer:

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3 years ago
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harkovskaia [24]
The perimeter of the square is calculated through the equation,
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When P is 32 units then,
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This 8 inches is the diameter of the cylinder formed by the rotation. 
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CaHeK987 [17]

Answer:idk

Step-by-step explanation:

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