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

What kind of work does Douglas do for covey?
A rectangular playground has a perimeter of 180 feet. If the width of the playground is 24 feet less than the length, what is the width, in feet, of the playgro
A delegation of authority ?
Nine divided by 45.99
Which of the following is a complex sentence? A. I would like to visit the Kinshasa, but I understand the city is unsafe for foreigners. B. Check out the
The period when output and living standards decline is referred to as:
signs such as the dash or the comma indicate that blank information will follow
The right to appeal is granted in _________. A the U.S Constitution B state constitutions or statutes C the Bill of rights D common law
The main purpose of a particle accelerator is to
Answer the question above