BLUE BOOK MATH PROBLEMS ahhhhh

Test Preparation
1

<p>i hate the fact that the blue book doesnt have explanations … my new way of studying is to do the practice tests in the blue book b/c most ppl on this site says that this works for them.
oh and another thing … doing these practice tests …how is it supposed to help me?? b/c when I do it … make a mistake and learn from it … how is that mistake gonna help me w/ other sat’ practice tests?? i mean they dont use the same questions so how does taking practice tests help>></p>

<p>so right now I am focusing on the math section and here are some that I skipped or got wrong. can someone PLZ offer explanations to these problems and show me how to do it … i know its quite alot =/ but i really need the help and doing these problems will also help you in some sort of way =)</p>

<p>okay so this is Section 2 : Practice test 7
Numbers w. pics :: 4 &5</p>

<li><p>Ahmad has containers of two diff. sizes. The total capacity of 16 containers of one size is x gallons, and the total capacity of 8 containers of the other size is also x galllons, and x >0. In terms of x, what is the capacity, in gallons of each of the larger containers?</p></li>
<li><p>Rectangle ABCD lies in the xy-coordinate plane so thati ts sides are not parallel to the axes. What is the product of the slopes of all four sides of rectangle ABCD</p></li>
<li><p>A company sells boxes of balloons in which the balloons are red, green, or blue. Luann purchased a box of balloons in which (1/3) of the mwere red. if there were half as many green balloons in the box as red ones and 18 balloons were blue, how many balloons were in the box?</p></li>
</ol>

<p>Number 15</p>

<li>Each of 5 people had a blank card on which they wrote a posotive integer, If the mean of these intergers is 15, what is the greatest possible integer that could be on one of the cards?</li>
</ol>

<p>and also#17 &18 ( too lazy to type it all out :smiley: )</p>

<p>SECTION 5:
7. The average of the weights of 14 books is p pounds. In terms of p, what is the total weight of the books, in pounds?</p>

<p>Number 8 , 12, 14, 16,18 ,19, 20</p>

<p>9.If k(2x+3)(x-1) = 0 and x >1, what is the value of k?</p>

<li>What is the radius of a circle that has a circumfrence of PI.?</li>
</ol>

<p>SECTION 8:
5. A square and a equilateral triangle have equal perimeters. If the square has sides of lenght 3, what is the lenght of one side of the triangle?</p>

<li>If x=-1 and k>0, which of the following has the greatest value.</li>
</ol>

<h1>7,8,13,15,16</h1>

<li>If n and p are integers greater than 1 and if p is a factor of both n+3 and n+10, what is the value of p?</li>
</ol>

<p>thnxxxx</p>

2

<p>Note: Call me out on any stupid mistakes I made. And is this supposed to be free response or multiple choice?</p>

<p>Section 2:</p>

<ol>
<li><p>Which is the larger container? If you think about it, the larger container is the container which it takes a lesser amount of to fill to a certain measurement. So the 8 containers are the larger ones. Now all you have to do is express one of the container's volume. Now, 8 containers is x gallons, so let C = 1 container. 8C = x ==> C = x/8. The volume is x/8 gallons.</p></li>
<li><p>Well, you're going to have 4 slopes since you have 4 lines. 2 of them are going to have slope x and 2 of them are going to be perpendicular to the other 2, and it thus follows that the other two lines are going to have slope -1/x. Multiple them together and you have x<em>x</em>-1/x*-1/x = 1. Now answer to yourself why it was a requirement for the sides to not be parallel to the axes.</p></li>
<li><p>You'll have to set up a system of equations for this one. Let X be the number of balloons in the box. Then you know that X/3 = # red, and since 1/2 # red = # Green, X/6 = # green. Since X - X/3 - X/6 = 1/2, then # blue = 1/2. So 1/2 of the balloons in the box are blue, and since there are 18 blue balloons, the total number of balloons in the box is 36.</p></li>
<li><p>Well, everyone has to have written a positive integer, so what would be a way to maximize the number one writes? That's right, you make the other 4 write the least positive integer there is... that is, 1. So 4 people write the number 1, and the average is 15. That means that if x is the greatest possible integer, (1+1+1+1+x)/5 = 15, so x = 71. If the numbers were distinct, how would you go about this problem?</p></li>
</ol>

<p>
[quote]
oh and another thing .. doing these practice tests ..how is it supposed to help me?? b/c when I do it ... make a mistake and learn from it ... how is that mistake gonna help me w/ other sat' practice tests?? i mean they dont use the same questions so how does taking practice tests help>>

[/quote]
</p>

<p>You're supposed to take what your mistakes are and learn them in the general case... not for the specific problem. I added questions after some of my answers to give you some more practice for similar problems. If you can't do the problems I have listed then you don't know the content well enough.</p>

3

<p>This is a link to many Blue Book math problems worked out by CC members</p>

<p><a href="http://talk.collegeconfidential.com/showthread.php?t=339734%5B/url%5D"&gt;http://talk.collegeconfidential.com/showthread.php?t=339734&lt;/a&gt;&lt;/p>

4

<p>omg i was looking for that thread lol but cudnt find it thanx!!</p>

<p>and phuriku,, thanks so much for ur time and help!</p>