<p>pg. 776 # 6 - for some reason I get confused on this problem because i'm not sure if 80 is the median or not since different amount of students have a different amount of scores. Explain please thanks</p>
<p>pg. 778 # 14</p>
<p>pg. 737 # 15</p>
<p>pg. 718 # 8</p>
<p>pg. 673 # 15, 18</p>
<p>pg. 464 # 19</p>
<p>pg. 488 # 5</p>
<p>pg. 535 # 18</p>
<p>pg. 534 # 12 (Need an easier way to solve this problem...if possible..I basically wrote it all out by doing [x]+[x+1] etc. which takes time)</p>
<p>pg 532 # 8</p>
<p>pg 596 # 8</p>
<p>pg 599 # 18</p>
<p>pg 614 # 13</p>
<p>pg 654 # 8</p>
<p>Sorry for the extensive list, but those are all the problems I'm stumped on. I'd greatly appreciate it if at least some of them can be explained to me and hopefully they can help others. I checked to make sure none of those were on the Consolidated List of Math Problems. THANKS!</p>
<p>Ooh, ooh, ooh, I know some of these! :) I've only gotten through page 600, so I can't help you beyond that. Plus, I'm not that great at math, so many of these stump me, too. However, I will help where I can.</p>
<p>pg. 464 # 19:
You know that the length of the arc is 6 pi, and you know that this represents a 30 degree section of the circle. The first thing you should do is divide 360 by 30 to find what fraction of the circle is represented here. Because the answer is 12, you know that you are being shown 1/12 of the circle. You must then multiply the 6 pi that is the length of the arc by 12 to find the circumference of the whole circle. Because the whole circumference is 72 pi, and you know that the formula for circumference is 2 pi r, you now know that the radius of the circle is 36. Take the radius squared times pi (leave pi as a symbol because it is a symbol in the answer choices) and you will find that the area of the circle is 1296. Because you are only interested in 1/12 of the circle, divide this number by 12. the answer is 108 pi, or answer choice A.</p>
<p>pg. 488 # 5:
All you have to do to answer this one is read the graph. You are being asked to estimate what Y will be when X is 5, so just look at where Y is when X is halfway between 4 and 6. Because it seems to be halfway between 2 and 4 on the Y axis, the answer is 3, or answer choice C.</p>
<p>pg. 535 # 18:
Sorry, no help here. I got this one wrong, too. </p>
<p>pg. 534 # 12:
This is the way that I did this one (and the fastest way I can think of to do it.) You know that there are 9 numbers that go in order and that the number 42 is in the middle of these numbers. Therefore, there must be 4 numbers on either side of 42. Because the numbers are consecutive integers, you can just add 4 to 42.</p>
<p>pg 532 # 8:
You are told that the Y value that corresponds to some unknown X value is equal to the Y value when X is 3. You can then look at the graph and find that when X is 3, Y is 5. The only other place on the graph where Y is 5 is at -1. Therefore, your answer is -1, or answer choice C.</p>