<p>Would really like to know how to do these. Thanks</p>
<p>For no. 7 you need to remember that the sum of the lengths of two sides must always be greater than the length of the third side.
So, in option E you have 10.So, if 10 is the length of the third side then the above theorem won’t hold true for the triangle.Hence, the answer is E.</p>
<p>8.let the no. of votes received by candidate II be x then
x+(x+28000)=2,800,000
Hence, x=1,386,000
Therefore no. of votes received by candidate I=1,414,000
%=(1,414,000/2,800,000)x100%
=50.5%
So, the answer is C.</p>
<p>Ok thanks. Two more questions :D</p>
<p><a href=“ImageShack - Best place for all of your image hosting and image sharing needs”>ImageShack - Best place for all of your image hosting and image sharing needs;
<p>14.the nth term of a sequence is given by a+(n-1)d
where a=first term and d= the common difference.
so we have,
17=a+2d and 77=a+5d
Solving you get a=-23 and d=20
To get the eighth term add 40 to 77 and your answer should be 117.</p>
<p>For 12 is the answer less than 1.5 and greater than 0?</p>
<p>Hmm for some reason I’m still a little fuzzy on the 3rd problem. As for what the answer is, I’m not sure, there’s no answer key for this test I have. I got .625 though as a possible answer so I guess that would be right.</p>
<ol>
<li>If a, b, and c are positive integers, and if
(a − c) b = 0, which of the following must be true?</li>
</ol>
<p>(A) a < b
(B) b < c
(C) a = b
(D) a = c
(E) b = c</p>
<p>Is it B?</p>
<p>I think it’s D.
Distribute b to (a-c)
ab-bc=0
Say like b is any integer, a and c have to be the same to make it equal 0</p>
<p>(a-c)b = 0
Since b is positive, it can’t be zero, implying that a-c = 0
which means a=c</p>
<p>
Which question are you having trouble with and where?</p>
<p>Which one is the ‘3rd problem’?</p>
<p>If by the third you mean #12, since that’s the only one that seems unsolved:</p>
<p>Okay, think about it this way. D is a point between B and E. That means that BD must be less than BE, so BD < 3.5.</p>
<p>Similarly, C is a point between B and D, so BD must be greater than CD. So 2 < BD < 3.5.</p>
<p>At this point you want to pick an arbitrary value for BD between 2 and 3.5–I’ll go with 3, since it’s the only whole number. BC = BD - CD, correct? So BC = 3 - 2, or 1. (Of course, as ccprofile said, all answers between 0 and 1.5 are correct, so .625 is also acceptable.)</p>
<p>By the way, if you haven’t already, with these kinds of problems it /really/ helps to draw a line and label the line segments.</p>