mubarakibrahim566
mubarakibrahim566 mubarakibrahim566
  • 02-10-2019
  • Mathematics
contestada

Solve: 2x+4y=20 and 2x-y=4

Respuesta :

nadiroz
nadiroz nadiroz
  • 02-10-2019
Answer:
(x, y) = (18/5, 16/5)
OR
(x, y) = (3.6, 3.2)
Answer Link
kevinw0928
kevinw0928 kevinw0928
  • 02-10-2019

Answer:

X=3.6

Y=3.2

Step-by-step explanation:

  1. 2x-y=4 which means 2x=4+y
  2. 2x+4y = 20 which means 4+y+4y=20 ==> 4+5y=20
  3. 5y = 20-4 = 16
  4. y= 16/5 = 3.2
  5. 2x=4+y=4+3.2=7.2
  6. x = 7.2/2 = 3.6

Answer Link

Otras preguntas

$1080 in the ratio of 1:3:5
What task did Kay tell Percival to complete before he would be allowed to speak with Arthur?
which word requires a spelling change before adding the sufix -er a fast b merry c smart d buy
What task did Kay tell Percival to complete before he would be allowed to speak with Arthur?
What is negative prefix
It looks like the choir director is more interested in her than me.
What is 7 and 29/80 as a decimal?
Emily meal cost 32.75 and Darren's meal cost 39.88 . Emily treats Darren by paying for both meals,and leaves 14% tip. Find the total cost
25 tens equal how much ? also what does 63 tens equal?
PLEASE ANSWER ASAP!!!!!!!!!!!!!!! The perimeter of a rectangle is at most 80 inches. The length of the rectangle is 25 inches. The inequality 80 - 2w > 50 ca