anonymous
  • anonymous
This is the only question on the entire quiz I don't get. Will fan + medal, please help!!! A student is trying to solve the system of two equations given below: Equation P: x + y = 8 Equation Q: 2x + 5y = 24 Which of the following steps can be used to eliminate the x term? 2(x + y = 8) −2(x + y = 8) −1(2x + 5y = 24) −2(2x + 5y = 24)
Mathematics
schrodinger
  • schrodinger
See more answers at brainly.com
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.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

amistre64
  • amistre64
what does it mean to eliminate something?
anonymous
  • anonymous
@amistre64 To get rid of?
amistre64
  • amistre64
yeah, or in math terms .. make it go to zero

Looking for something else?

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

More answers

amistre64
  • amistre64
so, what are our x terms in this case?
anonymous
  • anonymous
@amistre64 2x and x?
amistre64
  • amistre64
youre doing fine, yes now, what would you propose we do to eliminate them? what would we multiply one by such that when we add them together we get zero?
anonymous
  • anonymous
I wanna say 8 because if we're multiplying 1, 1 x 8 is 8. But at the same time I feel like that's wrong?
amistre64
  • amistre64
hmm, 8 isnt in our options so your feeling is spot on ... let "n" be some number such that: 2x + nx = 0, fpr all values of x (2+n)x = 0 any more ideas?
anonymous
  • anonymous
Oh! I was looking at the first equation. Would it be 5 then?
anonymous
  • anonymous
Or 2? Since we're trying to get rid of the x...(I'm sorry I know I'm really slow in math)
amistre64
  • amistre64
2 is closer :) lets try it out (2+2)x = 0 4x = 0, this is not true for all x when is 2+n = 0 ?
anonymous
  • anonymous
2+n = 0 when n = -2, right?
amistre64
  • amistre64
that better, yes so what this tells us is that we want to multiply by a -2 the last thing to determine is which equation should we multiply by -2?
anonymous
  • anonymous
Equation Q because if we solve that one first we can just replace the x and y variables in question P?
amistre64
  • amistre64
well, equation Q already has 2x in it ... so we really want to leave it as is. this leaves us with equation P. -2(x+...) = -2x + ... now when we combine (add) -2P and Q we get -2x + ... 2x + ... --------- 0x + ... and our x term has been eliminated.
amistre64
  • amistre64
so, which option should we pick now?
anonymous
  • anonymous
B?
amistre64
  • amistre64
hmm, your post does not letter them, but i would agree with the second option yes
anonymous
  • anonymous
Oh, sorry! Also do you mind if I save this? Like your responses? You helped me a lot
amistre64
  • amistre64
save what you want :)
anonymous
  • anonymous
Thank you for helping me!!!
amistre64
  • amistre64
youre welcome, and good luck :)

Looking for something else?

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