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FrozenT [24]
2 years ago
15

What are the solution of the following system X-y=-4 / 4x-4y=-16

Mathematics
1 answer:
Ugo [173]2 years ago
4 0

Solve equation [1] for the variable  y  

 [1]    y = -x - 4

Plug this in for variable  y  in equation [2]

  [2]    4x - 4•(-x -4) = 16

  [2]    8x = 0

Solve equation [2] for the variable  x  

   [2]    8x = 0  

  [2]    x = 0  

By now we know this much :  

   x = 0

   y = -x-4

Use the  x  value to solve for  y  

   y = -(-0/32766)-4 = -4  

Solution :

{x,y} = {0/32766,-4}

{x,y} = {0,-4}

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Answer:??

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3 years ago
Negative six and one third plus twenty over three
nydimaria [60]

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1/3

Step-by-step explanation:

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6 0
3 years ago
7:5 is equivalent to 21: ?
Svet_ta [14]

Answer:

7:5 is the same as 21: 15

Step-by-step explanation:

21/7 = 3 and 3*5=15

i divided 21 by 7 to see how many times it was multiplied to get there, so i could do the same thing to the 5

I hope this helps :)

4 0
3 years ago
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The number of penguins in Antarctica decreased by 30% between last year and this year. Last year there were 650 penguins. What i
goblinko [34]

9514 1404 393

Answer:

  455

Step-by-step explanation:

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  0.30 · 650 = 195

So, the population this year is ...

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3 0
3 years ago
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-10x—16=14<br> -16x -6 = 14
Alla [95]

Answer: No solution

Step-by-step explanation:

-10x-16=14

-16x-6=14

-10x-16=-16x-6

-10x+16x-16=-16x+16x-6

6x-16=-6

6x-16+16=-6+16

6x=10

x=10/6

x=5/3

-16(5/3)-6=

-80/3-6*3/3=

-80/3-18/3=

(-80-18)/3=-98/3 \neq 14

Hence, there is no solution

4 0
1 year ago
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