<p>the image is this <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>The LEAST number of trees one would need in order to arrange 4 trees on each line of the plan above is</p>
<p>A. 5
B. 10
C. 14
D. 15
E. 20</p>
<p>Why is it B?</p>
<p>yeah that’s a very good question. The answer is B because that’s how many intersections there are and if you count the number of interesections, there are 10. Also, if you put dots (trees) on all the interesections, you will get 4 trees on each line of the star.</p>
<p>Let’s say you put 4 trees on each of the five lines. That givesyou 20 tress. All you do now is subtract the number of intersection (each intersection reduces the number of trees needed by 1). That’s the logic I used…</p>
<p>Just one tree on each point of the star, and one on each corner of the pentagon in the middle. That gives each line four.</p>
<p>I mean like what does tree mean? Tree as in tree that grows or what?</p>
<p>
Yes. The ones you see in forests and parks. But don’t let that distract you, but rather focus on what is being asked. SAT’s generally use a variety of objects, from cups to marbles, and trees to birds, in their problems.</p>
<p>Yeah… tree isn’t a special math term or anything. Just a… tree.</p>
<p>lol…</p>
<p>oh that one is easy…so there is a line</p>
<hr>
<p>and you need 4 trees on it.</p>
<hr>
<p>_______________________________ (I used bushes)</p>
<p>and there are 5 lines…so you need one at each point …you get 10</p>
<p>r3n-_- :
The term ‘tree’ also has significance in network optimization problems, where ‘tree’, ‘spanning tree’ and others signify sets of (nodes, arcs) with specific properties. However, I don’t think SAT is going into combinatorial optimization problems involving networks… :)</p>
