jhone12908
jhone12908 jhone12908
  • 23-04-2020
  • Mathematics
contestada

4x- y=5
x+2y = 8
1) (3,2)
2) (3,3)
3) (2,3)
4) (2,2)
PLEASE HELP!!!

Respuesta :

alexashrex
alexashrex alexashrex
  • 23-04-2020

Answer:

{x,y} = {2,3}

Step-by-step explanation:

// Solve equation [2] for the variable  x  

 [2]    x = -2y + 8

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

  [1]    4•(-2y+8) - y = 5

  [1]     - 9y = -27

// Solve equation [1] for the variable  y  

  [1]    9y = 27

  [1]    y = 3

// By now we know this much :

   x = -2y+8

   y = 3

// Use the  y  value to solve for  x  

   x = -2(3)+8 = 2

Answer Link

Otras preguntas

Can you answer the 4 questions that are placed on the photo.
What are the factors of 6x2+37x−60?
Select the correct answer. which component of exercise primarily strengthens your heart? a. flexibility b. strength training c. cardio d. resistance training
A baseball is thrown horizontally at 55m/s. The ball slows down at a rate of -10 m/s2. How long is the ball in the air before coming to rest?
In the u. S. , what does a purple beach warning flag mean?.
PLEASE HELP! Use the Euclidean algorithm to find integers $x$ and $y$ such that $164x + 37y = 1,$ with the smallest possible positive value of $x$. State your a
Pls help me i need a correct amswer
I need some help with this question
Write the equation of the line in fully simplified slope-intercept form.
a little help with all of them hehe​