DashawnBrown72
DashawnBrown72 DashawnBrown72
  • 07-03-2017
  • Mathematics
contestada

Solve the system of equations and choose the correct ordered pair 4x - 2y + 7 =33 and 5y=3x-30

Respuesta :

charlottekrist
charlottekrist charlottekrist
  • 08-03-2017
1. Solve for x in 4x-2y+7=33
4x-2y+7=33
4x+6=33+2y
4x=33+2y-7
4x=2y+26
x=(2y+26)/4
x=(2(y+13))/4
x=(y+13)/2

2. Substitute x=(y+13)/2 into 5y=3x-30
5y=3x-30
5y=3*(y+13)/2 -30
5y=(3(y+13))/2 - 30

3. Solve for y in 5y=(3(y+13)/2 -30
5y=(3(y+13))/2 - 30
10y=3(y+13)-60
10y=3y+39-60
10y=3y-21
10y-3y=-21
7y=-21
y=-21/7
y=-3

4. Substitute y=-3 into x=(y+13)/2
x=(y+13)/2
x=(-3+13)/2
x=5

5. Therefore, 
x=5 and y=-3

I hope you have a nice day :D
Answer Link

Otras preguntas

2. Because it can take one year to form just a few centimeters of new soil, 3 points it is important to protect Earth's soil. * True False
Write a Creative story about a New Machine that can make it snow everywhere. And it has to be at least 8 SENTENCES .
Creating a Character:When an author creates a character they think about what they want the character to look like. They think about the words the character wil
4. What is the tan gential velocity of an object moving in a path of radius 2m with an angular velocity of3rad/s.​
What's something Historical that a positive attitude helped
when 10 is subtracted from x, the result is 6
Was the Declaration revolutionary for every group of Americans?
what is the rate of change of the function represented by this graph?
Both questions please and thank you
Which group predates the other? A) Dinosaurs B) humans This is a Ella question