<p>For the infinite solutions question:</p>
<p>the equations have to be equal. the equations looked something like this:</p>
<p>3x + 2y = 6
6x + 4y = 3a</p>
<p>You have to multiply the top equation by 2 first, to get 6x + 4y = 12. Which means 3a = 12; a = 4.</p>
<p>I know that equation is wrong, but the same steps are there.</p>
<p>^^Agree (10 char)</p>
<p>yeah i agree too</p>
<p>does anyone remember the answer to wall & ceiling problem?</p>
<p>Ceiling Wall Problem</p>
<p>was the answer 674? </p>
<p>2(13<em>10) + 2(13</em>9) + 2(9*10)</p>
<p>^^^</p>
<p>correct.</p>
<p>can’t believe I still remember it so vividly haha</p>
<p>ok ive read two or thee post o the sqrt58 problem.</p>
<p>what is the right answer lol. 3 over sqrt58 or 7 over</p>
<p>It’s 7 over. The sides were 3 (the opposite side of angle A), 7 (adjacent of angle A) and the hypotenuse, sqrt(58). The cosine of angle A (the smallest), would be adjacent, which is 7, over hypotenuse, which is sqrt(58).</p>
<p>3/sqrt(58) would be the sine of the smallest angle, not cosine.</p>
<p>wowowowowow. another dumb mistake.</p>
<p>Missed three so far. all of which i knew how to do… (Comparing the volumes of the cylinders, the fan question, this 7/sqrt(58) question)</p>
<p>Sigh.</p>
<p>was that one c or a</p>
<p>i know it was one or the other
i chose c im pretty sure it was right</p>
<p>yeah i think i put C too</p>
<p>no the room ceiling, wall problem was NOT 674. If you clearly read the question, it asked what was the painted area of just “the walls”- walls dont include ceiling or floor. i think the area was like 5XX</p>
<p>Actually it did talk about ceiling and floor…I remember reading it and going “eh, who would paint the ceiling and floor” but it was there.</p>
<p>i agree with xlostinwords.</p>
<p>i’m pretty sure it said ceiling and floor… and almost everyone agrees.</p>
<p>yeah it was defintely including ceiling and floor</p>
<p>how? it said walls and why would you want to paint your floor ? common sense!</p>
<p>act doesnt test common sense</p>
<p>i excluded the ceiling because i thought it said not to count that. but most people on cc are saying floor and ceiling…-cries-</p>
<p>Ok iambored10… why would i ever want to know how many lines i can draw between four points? Or why would someone calculate how many degrees a blade is moving when it is moved to the place of the next blade’s position?</p>
<p>the test has nothing to do with real life applications/common sense… it’s about what they ask…</p>