<p>Standard Deviation was 2.3%. I’m sure of this, as we went over Standard Deviation extensively in AP Psych.</p>
<p>Confirming that. For sure, 2.3.</p>
<p>@Snayyan09</p>
<p>Yeah then that’s what I put. I remember that the other two numbers were single digits numbers, and the only possible combination for a^2 + b^2 > 13^2 is that a a = 9 and b = 8, which I’m pretty sure it wasn’t. It was something like 8 and 5. Idk.</p>
<p>Any1 remember the log problem? I believe it was log (2x)^1/2. Not sure, though.</p>
<p>the answer was 1/2 log 2 + 1/2log x which equals log(2x)^1/2</p>
<p>JOhn, i put the same answer you had but other showed work that proved it was E. we might be wrong :/</p>
<p>This is off tangent, but can someone please help me. I consistently get high 30’s on all my math practice tests, but after today’s math section I realize I need help. Can any of you tell me how to prepare for more creative math problems such as those that were seen on today’s ACT?</p>
<p>Snayyan,</p>
<p>Do you remember the other two single digit numbers before 13? The only combination that is greater than the square root of 13 is square root of 9 + square root of 8. I almost know for a fact that the other two numbers were not 9 and 8, something like 5 and 8.</p>
<p>On the obtuse triangle one, you can also find the angles with law of cosines. That’s what I did, though it’s not very efficient.</p>
<p>The obtuse triangle one was definitely 8, 11, 16.</p>
<p>John i think it was like 5,8, and 13</p>
<p>What did yall put on the question about the triangular yard where it went from 2 to 3 inches? I got 33</p>
<p>for obtuse c^2>a2 +b^2</p>
<p>8, 11, 16</p>
<p>5, 8, 13</p>
<p>Don’t both work? In order to be obtuse, the sum of the squares of the two smaller sides must be smaller than the biggest squared. </p>
<p>25+64 < 169
64+121 < 256</p>
<p>what was the context of standara deviation?</p>
<p>@johnkim614</p>
<p>A triangle with sides 5, 8, and 13 does not exist, that is why the answer is 8, 11, 16.</p>
<p>@johnkim Do you happen to remember which letter those two answers corresponded to? I was stuck with those two. </p>
<p>@SgtGutter The standard deviation problem gave you a picture of a normal bell curve with its percentages inside.</p>
<p>@ephemeralbliss</p>
<p>5,8,13 was letter D
8,11,16 was letter E</p>
<p>I feel like I scored near 30. Although it is a major improvement from the low 20 I would have scored if I didn’t study, I didn’t reach my goal of 34 and I will spend a lot of time this summer preparing for the act as I had done last summer. My weakest section is always reading as I cannot comprehend all that information and answer 40 questions in 35 minutes. I finished Algebra II and am just taking AP stats next year so I will have to learn more about trig in my free time. The trig was harder than usual, the science was a little harder than the practice I did, the reading was easier than usual, and the English was a little long.</p>
<p>i put 5 8 13 d</p>