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anonymous
 one year ago
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)
anonymous
 one year ago
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)

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amistre64
 one year ago
Best ResponseYou've already chosen the best response.2what does it mean to eliminate something?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@amistre64 To get rid of?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2yeah, or in math terms .. make it go to zero

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2so, what are our x terms in this case?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@amistre64 2x and x?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2youre 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
 one year ago
Best ResponseYou've already chosen the best response.0I 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
 one year ago
Best ResponseYou've already chosen the best response.2hmm, 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
 one year ago
Best ResponseYou've already chosen the best response.0Oh! I was looking at the first equation. Would it be 5 then?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Or 2? Since we're trying to get rid of the x...(I'm sorry I know I'm really slow in math)

amistre64
 one year ago
Best ResponseYou've already chosen the best response.22 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
 one year ago
Best ResponseYou've already chosen the best response.02+n = 0 when n = 2, right?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2that 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
 one year ago
Best ResponseYou've already chosen the best response.0Equation Q because if we solve that one first we can just replace the x and y variables in question P?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2well, 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
 one year ago
Best ResponseYou've already chosen the best response.2so, which option should we pick now?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2hmm, your post does not letter them, but i would agree with the second option yes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh, sorry! Also do you mind if I save this? Like your responses? You helped me a lot

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2save what you want :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you for helping me!!!

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2youre welcome, and good luck :)
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