woottenemily7
woottenemily7 woottenemily7
  • 12-10-2020
  • Mathematics
contestada

Use elimination to solve for x and y:
9x - 4y = 11
x + 4y = 19
Select one:
a. (7,3)
b. (4,3)
c. (-1,5)
d. (3,4)

Respuesta :

wanimation144
wanimation144 wanimation144
  • 12-10-2020

Answer:

multiply second eqyation by 9

Step-by-step explanation:

then subtract with 1 st eqn

Answer Link
bahadurkarkitej443
bahadurkarkitej443 bahadurkarkitej443
  • 12-10-2020

q9x-4y=19

9x=19+

1)x=19+4y/9

x+4y=19

2)x=19-4y

1 and 2

x=19+4y/9=x=19-4y

Answer Link

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