<p>[url=<a href="http://www.scribd.com/doc/74460665/questionsss%5Dquestionsss%5B/url">http://www.scribd.com/doc/74460665/questionsss]questionsss[/url</a>]</p>
<p>ok so for the first question, i have NO IDEA as to how it will be done
and for the second one, i'm confused between (C) and (E)</p>
<p>thanks in advance :)</p>
<p>For the math one, line AB has to be an integer. That means that the x value where the two parabolas intersect is an integer. The point of intersection of the parabolas is where their y values are equal. So set them equal.
x^2=k-x^2 → 2x^2=k<br>
Plug in values for x, say 1,2,3,4 and you get 2,8,18,32, respectively.
That means your answer is C, it cannot be 12.</p>
<p>bumppp…can i get a more satisfactory answer for the math question!!!</p>
<p>PencilxBoxes’s solution is solid.
Here’s a variation:
x^2=k-x^2 → 2x^2=k
k/2= x^2
Since x is an integer, k/2 has to be a perfect square.
Divide the answers by 2:
A. 2/2 =1 <— a square
B. 8/2 = 4 <— a square
C. 12/2 = 6 <— not a square. That’s the answer.</p>
<p>For the second one: you can have “preference between” - not “preference from”.</p>
<p>I would have gone E for the second one? Just sounds better and I think its a case of ambiguous pronoun of “their”. Please correct me if I’m wrong because writing for me is just a case of hearing the mistakes</p>
<p>for the first one, </p>
<p>visualize the Y-axis, line AB and curve y = k-x^2 is part of new curve with integer increases in X. hence, the Y value of this imaginary curve (A to y) has to take on a perfect square value, and this value is half of K (0 to y). </p>
<p>hence,
1^2 * 2 = 2
2^2 *2 = 8
3^2 * 2 18 </p>
<p>12 doesnt fit.</p>
<p>for question 2, A B D has awkward construction and E is incorrect in meaning; people do not derive their preference/tastes from the unidentified products in question</p>
<p>“People do not derive their preference/tastes from the unidentified products”</p>
<p>Why not?</p>
<p>the original message conveyed by the sentence = selecting a preferred product via a taste test</p>
<p>meaning of option e “for their preference from two or more unidentified products” = acquiring a certain preference and taste from the products</p>