anonymous
  • anonymous
If the following system -15x + 9y = -9 -25x + ky = -12 is consistent, then k is not equal to = ?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Jamierox4ev3r
  • Jamierox4ev3r
this user isn't trying to find x and y, if I am understanding the problem correctly. The user is trying to find what k is equal to, assuming that the following system of equations is consistent.
anonymous
  • anonymous
Yes, i am looking for k.
anonymous
  • anonymous
OK ! NOW LOOK !: -15x + 9y = -9 -25x + ky = -12 -9/-12 = 3/4 Now do it : 3/4(-25x + ky = -12) We have : -75/4x + 3/4ky = -9 -75/4x + 3/4ky = -15x + 9y (-75+60/4)x+3/4ky=9y 15/4x+3/4ky=9y ____________________________________ So we have 45x + ky = 9y and in the end ky=9y/45x Now get 9y/45x to ky .

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anonymous
  • anonymous
-4/3?
anonymous
  • anonymous
So we have this system : -15x+9y=-9 -20x + 9y / 45x = -12 Now can you answer to your self ?!:) :D
anonymous
  • anonymous
12 is wrong. That's what i found first.
anonymous
  • anonymous
alright, i'll follow the other guy's step and i'll see. thank you

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