April 2011 ACT Math Discussion

Test Preparation ACT Preparation
161

<p>What answer choice was 16?</p>

162

<p>18 doesn’t go into 80 though so how can that be the answer?</p>

163

<p>B/G i think</p>

164

<p>What answer choice was (a+b) is less than 1? It was the last question.</p>

165

<p>No, it was 18.</p>

<p>If you have area 80 and a 4:1 ratio, then 4x(x)=80. 4x^2=80, 80/4=20. Answer is the square root of 20, or 2 root 5, which when multiplied by four is about 17.8, rounding to 18.</p>

166

<p>@highteeld
it said -4 tho, so
3^(-)4 is 1/81
Answer for the log question was 3 rite?</p>

167

<p>YES 10char</p>

168

<p>whoops, misread the question</p>

169

<p>Is it just me or were many of the answers on the Math section letter D.</p>

170

<p>18 = the area of the rectangle. The ratio = 4:1. That means a number, n, times 4n = 80. Solve for n, and multiply by four to find the larger side…</p>

171

<p>The area was 80 :)</p>

172

<p>Oh my god I totally love you guys, reading over these has given me some confidence.</p>

<p>What was up with this Lake problem? I remember it was with a guy J… they didn’t really put a marking on the diagram to show where he initially started, but they did say he was perpendicular to the tree or something. I think they asked for the opposite side, and the long leg was 100units. So you would use tan right?</p>

<p>*Here is a picture:
<a href=“http://img807.imageshack.us/img807/3314/lakeproblem.jpg[/url]”>http://img807.imageshack.us/img807/3314/lakeproblem.jpg&lt;/a&gt;&lt;/p&gt;

<p>Does anyone remember the answer they got? I don’t remember the angle given either… it was like… 42? idk…</p>

173

<p>47 was the answer.</p>

174

<p>that’s what i put</p>

175

<p>what about the circle question? Where it said the circle was 17 units. C was 2 units clockwise A, B was 9 units counterclockwise A, D was 9 units clockwise A? ahhh help! thanks</p>

176

<p>Thanks bio1995 & ahaimoud94! That answer sounds familiar.</p>

<p>Does anyone remember the answer to the sector problem? I think you needed to find the arc length. It said the circumference of the circle was 60, and it was looking for the arc length and it gave you 144º.</p>

<p>I used a formula like, S=(144/360)(60)=24… I didn’t remember that formula and totally guessed! ;_;</p>

<p>premed1994, I got ACDB. yes, I think i remember correctly…</p>

177

<p>oh also, for the 80 as area one, are you guys SURE it was area and not perimeter?</p>

<p>because i read that a few times, and I’m pretty sure it was perimeter</p>

178

<p>yup 24 was right</p>

179

<p>I think that problem was like a 3 part problem? One of the questions it asked you for perimeter, then it asked you for area…?</p>

180

<p>ok the rectangle one was 18…the area was 80 and the dimensions of the rectangle were 18:4.444444.</p>