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Reptile [31]
3 years ago
10

Y= -3X;(2,-6) IS THIS A SOLUTION OR NOT A SOLUTION

Mathematics
1 answer:
Mama L [17]3 years ago
5 0
2 = x
-6 = y

⓵ Replace “x” in the equation with its value and solve the equation to see if y = -6 :

Y = -3x

Y = -3(2)

Y = -6

→ When you replace the “x” with 2 in the equation, y is equal to -6, which means that it is in fact a solution!

There you go! I really hope this helped, if there’s anything just let me know! ☻
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S_A_V [24]

Answer:

y = 3x + 6

Step-by-step explanation:

The y intercept is 6 and the slope is 3 so the equation is y = 3x + 6

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Why is the product of 1 and 3/4 equal to 3/4?
Kamila [148]
Because anything multiplied by one is that number. If you have 3/4 one time, then it is 3/4.
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Solve the system of equations 5x+9y+9z=5 4x+9y+6z=10 2x+2y+5z=9
erma4kov [3.2K]

Answer:

{x,y,z} = {-116,28,37}

Step-by-step explanation:

// Solve equation [3] for the variable  z  

 

 [3]    5z = -2x - 2y + 9

 [3]    z = -2x/5 - 2y/5 + 9/5

__________________________________________________________

// Plug this in for variable  z  in equation [1]

  [1]    5x + 9y + 9•(-2x/5-2y/5+9/5) = 5

  [1]    7x/5 + 27y/5 = -56/5

  [1]    7x + 27y = -56

__________________________________________________________

// Plug this in for variable  z  in equation [2]

  [2]    4x + 9y + 6•(-2x/5-2y/5+9/5) = 10

  [2]    8x/5 + 33y/5 = -4/5

  [2]    8x + 33y = -4

__________________________________________________________

// Solve equation [2] for the variable  y  

 

 [2]    33y = -8x - 4

 [2]    y = -8x/33 - 4/33

__________________________________________________________

// Plug this in for variable  y  in equation [1]

  [1]    7x + 27•(-8x/33-4/33) = -56

  [1]    5x/11 = -580/11

  [1]    5x = -580

__________________________________________________________

// Solve equation [1] for the variable  x  

  [1]    5x = - 580  

  [1]    x = - 116

__________________________________________________________

// By now we know this much :

   x = -116

   y = -8x/33-4/33

   z = -2x/5-2y/5+9/5

__________________________________________________________

// Use the  x  value to solve for  y  

   y = -(8/33)(-116)-4/33 = 28

__________________________________________________________  

// Use the  x  and  y  values to solve for  z  

 z = -(2/5)(-116)-(2/5)(28)+9/5 = 37

╦────────────────────────────╦

│Hope this helped  _____________________│    

│~Derelis ____________________________ │

╨___________________________________╨                  

4 0
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Rationalize the denominator √7x/75
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Answer:

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That would be your first "speed"

Then you calculate all of them :speed1+speed2+speed3 = something.  

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Then, you divide it by how many "speeds" they are: 60miles/hr divided by 3 if I continue my previous example.

It is my first answer, and I hope I could help you a bit!

Sorry for the awkward English, as it is not my mother tongue.

Step-by-step explanation:

8 0
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