whitneysledge1 whitneysledge1
  • 08-06-2017
  • Mathematics
contestada

Solve the following system of equations by the substitution method. 8x = 2y + 5 3x = y + 7 What is the solution set?

Respuesta :

Аноним Аноним
  • 08-06-2017
8x = 2y + 5
3x = y + 7 so y = 3x - 7
substitive 
y = 3x - 7 into 8x = 2y + 5 

8x = 2y + 5 
8x = 2(3x - 7) + 5 
8x = 6x - 14 +5
2x = -9
x = -4.5

y = 3x - 7
y = 3(-4.5) - 7 = -13.5 - 7 = -20.5

solutions (-4.5, -20.5)


Answer Link
chanelglez1 chanelglez1
  • 03-06-2022

Answer:

{(-9/2, -41/2)}

Answer Link

Otras preguntas

what is the historical significance of the year 1898?
I am having trouble predicting this equation. "Coke will reduce hot arsenious oxide to pure arsenic (As4). With the 4 as the subscript.
which of the following lead to the early spread of christianity
What is the oldest political party in the western world?
For what reason did John Stuart Mill believe the government should get involved in the economy? to increase competition between businesses to help the poor and
Why was the Twenty-first Amendment to the US Constitution necessary?
What does symmetry mean??
All of the following are correctly paired with their phase of the business cycle EXCEPT __________. high level of employment: peak phase slowdown of business ac
How do you convert gallons to liters? Explain.
4/3*w = 36 what is w? how do I check?