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tamaranim1 [39]
2 years ago
7

The cost of 6sandwiches and 4 drinks is $53. The cost of 4 sandwiches and 6 drinks is $47. How much does one sandwich cost?

Mathematics
1 answer:
vazorg [7]2 years ago
5 0

Answer:

$8.00

Step-by-step explanation:

6 divided by 53=8

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1).3x-y=5
solmaris [256]

Answer:

1). y= -5+3x

2). y= -2x-13

3). y= -6x+2

4). y= -x+4

5). y≈ 0.57x

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7). Equation incomplete

8). y=3x+23

Step-by-step explanation:

1).

3x-y=5

<em>Subtract 3x from both sides</em>

-y=5-3x

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

y= -5+3x

2).

y+7= -2(x+3)

y+7= -2x-6

<em>Subtract 7 from both sides</em>

y= -2x-13

3).

y= -10-6(x-2)

y=  -10-6x+12

y= -6x+2

4).

3x=12-3y

<em>Add 3y to both sides</em>

3x+3y=12

<em>Subtract 3x from both sides</em>

3y=12-3x

<em>Divide both sides by 3</em>

y= -x+4

5).

-4x-7y=0

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

-7y= -4x+0

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

7y= 4x

<em>Divide both sides by 7</em>

y≈ 0.57x

6).

4x-2y=18

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

-2y= -4x+18

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

2y=4x-18

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

y=2x-9

7).

y= 5-

Equation is incomplete.

8).

y-2=3(x+7)

y-2=3x+21

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

y=3x+23

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2 years ago
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