June ACT Math Section

Test Preparation ACT Preparation
181

<p>Answers so far</p>

<p>Ratio of lengths 1:5</p>

<p>|2x-a| < 3: 5</p>

<p>midpoints: MN is always the same slope as OP</p>

<p>inside angle: 150</p>

<p>Adding imaginaries: 7isqrt3</p>

<p>matrix: 13/4</p>

<p>$315</p>

<p>person in chair: 160</p>

<p>85th term was 5</p>

<p>x-coordinate of midpoint: 10</p>

<p>equation for nail length: .25n+.5</p>

<p>Buy a minimum of 576 nails</p>

<p>He should buy a type 30d nail</p>

<p>Square pyramid height: 14</p>

<p>cos=(50-x^2)/50</p>

<p>factor out (x+2): c=1</p>

<p>LCD: 17^2 * 23^3 * 61 ^2</p>

<p>Find the height: 13.7</p>

<p>Proof: (D) SAS</p>

182

<p>lololwut, i remember the 2nd-to-last one working…i multiplied all the denominators out to get their values and then did the same with the answer choices, and D (the 2nd-to-last/second-largest) divided them all evenly.</p>

183

<p>Mine was 69R I think…</p>

184

<p>was the answer c=-1 for #60 an option?</p>

185

<p>liv is not talking about the same LCD question as everybody else</p>

<p>^^^it was 1</p>

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<p>I spent forever figuring out the 85th term. I was gunna count them out but it would have taken too long. so I set upsome proportion for each of the three terms and somehow I got 5. Don’t ask me how i got it though i have no idea what I did. </p>

<p>This math test was brutal. The red book looks like a piece of cake to this. I would get 3/4 wrong in the red book and i went over everything in there and i feel like i did horrible.</p>

187

<h1>60 is 1 I’m pretty sure, atleast this is what i did:</h1>

<p>if x+2 is a factor than -2 is a zero and you plug in f(-2)=0 and in the end get 1 for c.</p>

188

<p>no, c = -1 wasn’t an option. I couldn’t solve it at first (I had c = -2 I think), but after I factored out a 2 from the polynomial it was clear that c = 1</p>

189

<p>^ oh wow. I was doing long division for #60. I didn’t even think about that lol</p>

190

<p>you were supposed to use synthetic division for the (x+2) one, and then c = 1</p>

191

<p>How did you know you weren’t supposed to round the 85th term? I knew it was 5 but I put 6 because that was the rounded version. Why did they make both of those answer choices?? :(</p>

192

<p>argenia, im not? phew! im talking about the one with the HUGE numbers? like “what is the LCD of these?”</p>

193

<p>Can somebody please explain the LCD problem to me? The one with the three factions. Please.</p>

194

<p>@liv
they’re talking about nails
you are correct. It was D.</p>

195

<p>sean, definitely not 6. it wouldnt ask for rounded. you were supposed to divide 85 by 3 and look at the remainder (the method you use for finding the exponent of imaginary numbers, if this rings a bell), which was .333333333 (or 1/3). so, out of 5, 8, and 7, the first term out of the three is 5, so its 5!</p>

196

<p>@sean
2 of the choices were completely wrong. You weren’t supposed to round at all. It was just asking for the term and since it was a repeating number the number wouldn’t just round or whatever.</p>

197

<p>Why did it give 6 as one of the answer choices then?</p>

198

<p>ohhh got it. yeah that number theyre saying is familiar, im pretty sure i got that one right too.</p>

<p>none wrong so far (except for reading, which is a -2/-3)! fingers crossed it stays that way! :)</p>

199

<p>@ loveny the lcd question was the one with the most numbers in it it was something like 60^2 x^3 y^2</p>

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<p>sean, it gave it as an answer choice for the same reason it gives 4 incorrect answers for every question: to trick you! 0.587587587… repeats for an infinite amount of decimal places; it doesnt just become 0.58766666666… simply because your calculator says it does!</p>