tremapp11 tremapp11
  • 01-07-2017
  • Mathematics
contestada

Solve this using the elimination method
4x - 3y = 22
2x + 8y = 30

Respuesta :

yanniecon
yanniecon yanniecon
  • 01-07-2017
4x-3y=22
-4x-16y=-60
-19y=38
y=-2
Answer Link
bcalle
bcalle bcalle
  • 01-07-2017
4x - 3y = 22
2x + 8y = 30

Multiply the second equation by - 2

    4x - 3y = 22
-2(2x + 8y = 30)
-----------------------

     4x - 3y = 22
   - 4x - 16y = - 60
----------------------------
           - 19y  = - 38
Divide both sides by - 19
               y = 2
Plug 2 into either equation and solve for x.
2x + 8(2) = 30
2x + 16 = 30
subtract 16 from both sides
2x = 14
divide both sides by 2
x = 7
(7, 2)
Answer Link

Otras preguntas

A microscope is set so it makes an object appear 4 x 10`2 times larger than its actual size. A virus has a diameter of of 2 x 10`-7 meter. how large will the di
What Should I Know About Nigeria?
What is the World's Largest Rainforest?
The specific temperature at which a substance changes from a liquid to a gas is an example of a
what is 5m+6+m-18=60
Did Maya Angelou's uncle kill the mom's boyfriend after finding out he raped Maya or beat him to death?
Sam and lou need a total of 1 foot of wire for a science project.sam wire is 8 out of 2 n lou is 7 out of 8.Do they have enough.
WHAT IS 123456567890*1423 THAT MEANS TO DIVIED PLEASE TELL ME THE ANSWER
How do you use Bill of rights in a sentence
Write 3/5, 1 2/3, 15/7, 1/2, 2 5/8, and 9/4 in order from least to greatest!!!