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

please help me because I don't understand how to do it.:)
Which antilipemic drug get rid of bile acids in the gastrointestinal tract and indirectly removes cholesterol from the liver
data is processed, stored, and transmitted as a series of 1s and 0s. Each 1 or 0 is called a(n) . A series of eight 0s and 1s, called a(n) , represents one char
What is the value for x?
When a number is decreased by 9.9% the result is 40. What is the original number to THE NEAREST TENTH? SUPER URGENT PLEASE HELP!!
Which word in the sentence is the object of the preposition ?please scrape the dishes and put them in the sink 1)In 2)Them 3)Dishes 4)Sink
60+ Points [Please answer in 4+ sentences] Part A) Which issue do you think was most important in the Concord City election? Part B) Explain your choice
What are the best types of evidence to use within the body paragraphs of an argument essay? Unsupported opinions Logical fallacies Visual Aids Facts a
Boyles law states that?
Create the command based on the following information No ponerselos / ustedes