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Murrr4er [49]
3 years ago
11

Substitute with One Solution2x -y=-116x + y = 3​

Mathematics
2 answers:
madam [21]3 years ago
8 0

Answer:

x=1, y = -3

Step-by-step explanation:

2x -y=-11

6x + y = 3​

Add the two equations together

2x -y=-11

6x + y = 3​

--------------------

8x  = 8

Divide by 8

8x/8 = 8/8

x= 1

Now find y

6x+y = 3

6(1) +y = 3

6+y =3

Subtract 6 from each side

6+y-6 = 3-6

y = -3

sveticcg [70]3 years ago
4 0

Answer:

y = - 3

x = 1

Step-by-step explanation:

2x - y=-11

6x + y = 3​

_________

8x  = 8

x = 1

Putting x = 1 in 6x + y = 3, we get:  

= 6(1) + y = 3

= 6 + y = 3

y = 3 - 6

= - 3 

Hope this helps!

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My name is Ann [436]
Switch sides

4/5 (x+3)=y+6

Multiply both sides by 5

5*4/5 (x+3) = 5y+5*6

Simplify

4(x+3) = 57+30

Divide both sides by 4

4(x+3)/4 = 5y/4+ 30/4

Simplify

x+3 = 5y+30/4 

Subtract 3 from both sides

x+3 - 3 = 5y+30/4 - 3

Simplify 

x=5y+30/4 - 3











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3 years ago
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A box of candy weighs 340.23 grams and costs $18.99. If 1 gram is approximately 0.03527 ounces, what is the unit price per ounce
svlad2 [7]
The correct answer is:  [C]:  " $ 1.58 " . 
_______________________________________________
Explanation:
______________________________________________
Given: 
______________________________________________
$18.99 per 340.23 grams ;

and given: 

1 gram ≈ 0.03527 oz (ounces) ;
______________________________________________
Find the unit price per OUNCE (oz).
______________________________________________
Given:  $18.99 per 340.23 grams ;

Convert:  "340.23 grams" to "ounces (oz)".

Given:  "1 gram ≈ 0.03527 oz" ;

   340.23 grams =  (340.23 * 0.03527) oz. = 11.9999121  (about "12 oz.").

So,  $19 / 12 oz. = ? dollars per UNIT OZ. ;  =

(19/12) dollars per oz. = (19÷12) dollars per oz. = $ 1.58333 ; which corresponds to:  Answer choice:  [C]:  $1.58 .
______________________________________________________

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