<p>Yea. It was…</p>
<p>50 miles/hour times 1/3 hour (since 20 min is 1/3 of an hour) which gave you 16.6666… which rounded to 17.</p>
<p>yes you multiplied 50 mph by 1hour/60minutes and multiplied that by 20minutes to get how many miles it was.</p>
<p>I got the smallest angle was 7/sqrt(something). I’m fairly sure I got this one right.</p>
<p>And for the fan one…I put 36 degrees. Here is my reasoning, the M side moves 36 degrees to become the N side, if it moved 72 degrees, it would’ve moved the place of 2 blades. Does this make sense to anyone else?</p>
<p>And for the infinite answer one, I got a=2. Since you multiply everything by 2. Why are people saying it’s 4? Unless I read the question wrong :(</p>
<p>Oh wow, I just realized I got both the degree one and the infinite one wrong. I knew the answers but made mistakes that don’t even make sense. Ignore above posts…</p>
<p>what was the question for the inifinite problem?</p>
<p>I used law of sines for the boat problem and got 31/32… does anybody remember the problem better? I remember the angles were 40,140, and 10. Not sure what the side length was.</p>
<p>i got that too holland1945</p>
<p>You couldn’t use the law of sines. You had 2 sides and the included angle so you’d have a variable in each of your law of sines ratios. I’m not sure where you’re getting that 10.</p>
<p>they gave you a 40 degree angle…and then the angle made from turning the boat was 40 degrees (other side of the line), so the supplementary angle is 140. The other angle must be 10. </p>
<p>I could be totally wrong…</p>
<p>The 40 degree angle they gave you was the angle of the boat turning so yes the supplementary angle was 140 and that was the angle in that triangle but the other 2 angles depended totally on the length of the sides so you couldn’t get them using the angles they gave you.</p>
<p>err why do I remember another 40 degree angle actually already in the triangle? I think 52 or whatever is correct because my friend got it with the given formula, but I’m just wondering where my method failed.</p>
<p>If there were an angle in the triangle that was 40 degrees, then the supplementary angle couldn’t be 140 because that alone would add up to 180 when all three need to add up to 180 in a triangle.</p>
<p>haha I don’t know what I did. So there was definitely only one angle given(i at least hope my imaginary angle was 30 and not 40)?</p>
<p>it was definitely 52…</p>
<p>it had to be 140. A line is equal to 180 degrees. The boat turned at an angle of 140 degrees. Ergo, 40 degrees.</p>
<p>ok, so did the question about the room ask for all sides (walls+ceiling+floor) or just the walls?</p>
<p>Also, how about the can one? the stacks of cans… something about 5 layers. That was the only problem I couldn’t get… stupid me.</p>
<p>I believe the top layer had 20, so the next one down would be 24, then 28…32…36. There were 5 layers, and the sum is 140.</p>
<p>alright, thanks.</p>
<p>The question about the room asked for the walls, ceiling and floor (minus windows and doors)</p>
<p>And holland 1945, you are right with the can problem. I got the same thing.</p>