nikki8133
nikki8133 nikki8133
  • 04-12-2019
  • Mathematics
contestada

Solve the system using elimination.
3x + 5y = 55
5x + 4y = 57

Respuesta :

Yang100
Yang100 Yang100
  • 04-12-2019

Answer:

x=5, y=8. (5, 8).

Step-by-step explanation:

3x+5y=55

5x+4y=57

---------------

5(3x+5y)=5(55)

-3(5x+4y)=-3(57)

-------------------------

15x+25y=275

-15x-12y=-171

---------------------

13y=104

y=104/13

y=8

3x+5(8)=55

3x+40=55

3x=55-40

3x=15

x=15/3

x=5

Answer Link

Otras preguntas

Which of the following points is the solution to the system? X-2y= -1 3x+5y = 8
Need help in math How does the slope of the line y=-x affect the graph? Instructions says :Think about how the graph changed as a result of changing the slope t
Go math chapter 3 review answerd
What was one of the ways that people of ancient times classified plants and animals?
What is the vertex of the parabola defined by the equation(x − 2)^2 = -12(y − 2)?
What are some compatible numbers that i can do mently for 2242 divided by 12?
How did the colonist get along with the powhatan people nrar jamestown?
The perimeter of a rectangle is 40x - 10. if the length of the rectangle is 12x - 6, what is the width of the rectangle?
A fossil found under a layer of rock is usually _____.
Determine whether the following relation is a function. {(3,7), (3,8), (3,-2), (3.4),(3,1)} A) it is a function because the ordered pairs all have the same x-