tayaross99 tayaross99
  • 03-05-2021
  • Mathematics
contestada

Solve the simultaneous equations 2x+3y=9 4x+y=13

Respuesta :

drmallery drmallery
  • 03-05-2021

Answer:

x=3, y=1

Step-by-step explanation:

2x+3y=9. Equation 1

4x+y=13   Equation 2

y=13-4x.  Modify equation 2 to isolate y

2x+3(13-4x)=9 subst value of y of equation 2 into equation 1

2x+39-12x=9 solve equation

-10x+39=9

-10x=-30

x=3

solve for y

2x+3y=9

2(3)+3y=9

6+3y=9

3y=3

y=1

Check answer:

4x+y=13

4(3)+1=13

13=13

Answer Link

Otras preguntas

70-q-q-2q=80 We'll this is confusing
isabella has found that she stays the most fit by running variouse dinstances and terrains through out the week. On mondays she runs 2.5 miles, on tuesdays 4.6
PLEASE HELP 20 POINTS!The sum of the x- and y-intercepts of the graph of 5x+3y = k is 32 5. Find the length of the line segment joining the x- and y-intercepts.
how can astronomers use rocks from the moon to estimate the age of the solar system ?
1. What are the next three terms in the sequence?-1 ,9 ,19 ,29 . . .A. 38, 37, 32B. 40, 51, 62C. 39, 49 , 59D. 38, 47, 562. What are the next three terms of the
What Is Ethane? Can you help me?
solve the formula for the indicated variable  c=yt+y,for t (the solution is t=___)
what are the components of blood?
What is the HCF of 2 x y and 6 x y?
solve for x:    x to the negative 3rd power is equal to 27 over 64