anonymous
  • anonymous
FAN AND MEDAL***
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Given the system of equations presented here: 4x + y = 4 2x + 7y = 28
anonymous
  • anonymous
Which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? A)Multiply the second equation by −1 to get −2x − 7y = −28 B)Multiply the second equation by −4 to get −8x − 28y = −112 C)Multiply the first equation by −7 to get −28x − 7y = −28 D)Multiply the first equation by −2 to get −8x − 2y = −8
anonymous
  • anonymous
@Astrophysics @DanJS

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

DanJS
  • DanJS
Have you done this thing before?
anonymous
  • anonymous
no, i think i posted but nobody answered ;/
DanJS
  • DanJS
You can multiply an entire equation through by a number and it will not change the line... you want to do that on one of the two, so when you add them together, one variable cancels out to zero
DanJS
  • DanJS
There is more than one way to do it, but by the choices, we will eliminate the y by multiplying the first equation through by a -7, so -7y + 7y = 0 4x + y = 4 2x + 7y = 28 -28x - 7y = -28 2x + 7y = 28 ------------------ add together -26x = 0
anonymous
  • anonymous
its C?
DanJS
  • DanJS
yes
anonymous
  • anonymous
THANK YOU!!!! DANJS
DanJS
  • DanJS
welcome

Looking for something else?

Not the answer you are looking for? Search for more explanations.