January 2010 Math thread

<p>The question for 9y/4 was</p>

<p>An 8 foot long log costs $6.00</p>

<p>Relate the price, x, to the number of YARDS (1 yard = 3 ft) of log bought.</p>

<p>The equilateral was a tall triangle and a short triangle butt to butt. The sides of the tall triangle were 12. Find the area of the equilateral.</p>

<p>@suhstacy</p>

<p><a href=“http://talk.collegeconfidential.com/sat-preparation/818534-do-you-need-enter-fractions-lowest-terms-grid-math-sat.html[/url]”>http://talk.collegeconfidential.com/sat-preparation/818534-do-you-need-enter-fractions-lowest-terms-grid-math-sat.html&lt;/a&gt;&lt;/p&gt;

<p>I hope so; I didn’t simplify.</p>

<p>yes!! thanks =)</p>

<p>does anyone remember exactly what the hose question was and what were some of the answer choices?</p>

<p>dammit!!! math is soooooooo sneaky!!!
I think I got 3 or 4 wrongs. I can’t believe this!!!</p>

<p>What was this 8 in both groups question? Thats the only one I dont remember.</p>

<p>I cant remember my answer so if someone could type out the question itself I can see if I got it right. Thanks!</p>

<p>Yeah, I was pleasantly surprised by the amount of algebra as well. And just1Q, maybe we could help each other out:</p>

<p>I had math experimental. I think it was the one with 4 squares, with 1 being divided equally each time. The answer I got was 1/32. Some other weird questions in there like n^4, what is the value of n, and some question involving some Canadian provinces and syrup I think. I really, really hope this was experimental, or I’m screwed. It was 25 minutes, and 20 questions, and it was one of four math sections that I had.</p>

<p>Hose was grid in.</p>

<p>Tank S was filled in 4 minutes and Tank B(?) was filled in 30 minutes. The hose operated at the same rate for both tanks. They asked for ratio of volume of B to S. It was simply 30/4. Which is 15/2 or 7.5</p>

<p>Hey do you guys remember the one question with the circle and the two shaded triangles with an area of 9 and then it asked the side of the square or something like that?</p>

<p>I got 6 for that if you guys remember the question. 3 was another answer choice I think…</p>

<p>"Also, I really don’t remember the 9y/4 question. I know it’s something with yards but can someone remind me what the numbers in the question were? And how you solved?
And I’m pretty sure I got 135 for the quadrilateral because I remember getting that number for something, but again I don’t remember the question. Can someone remind me what it was?
Thanks! "</p>

<p>Wasn’t there some constraint on x that the numbers must be less than 10
so y had to be 9
the smallest would have been 1+2+9 = 12
so 12/9
or 4/3?</p>

<p>Thanks</p>

<p>@println
Yeah, the answer was 6.</p>

<p>Can someone explain to me how exactly the graph was to be read . The one with the correct answer choice f(0) + f(a) = f(a).
That is the one I missed x(</p>

<p>On the graph, f(0) = 0
Therefore, f(0) + f(a) = 0 + f(a) = f(a).</p>

<p>Can someone please let us know the exact problem with the 135 quadrilateral? I don’t remember having that question…</p>

<p>I’m probably missing something very obvious, but why is the triangle inscribed in a cube 60?</p>

<p>um print i put 6, though i wasn’t certain. and it was just a square, with the 2 lower corners filled in, so 2 triangles.</p>

<p>and about the a/6 question. didn’t you need to find x? so 6x+3=a. x would have to be (a-3)/6. so 6[(a-3)/6] +3=a then a-3+3=a. with a/6 you’d have a 3 left over. sorry if im just not seeing somethin… i didn’t do that well today like 4/5 wrong.</p>

<p>manga, because it said the 3 diagonals of a cube form a triangle. which makes it equilateral. then it asks for one of the angles. making the answer have to be 60.</p>

<p>for the 135 quad, is this the question? it gave a sorta rhombus looking quadrilateral, and then a line from one corner to the other. said 2 sides were 15, and then the line was 15. and asked for total perimeter</p>

<p>How’d you guys get 72 members in the band? I thought it said there were 3 times as many band members as orchestra members and twice as many orchestra members as choir members.
3O + 2O + O = 108
108/6 = 18
18 x 3 = 54
So there 54 members in the band.</p>

<p>Mm… maybe I read it wrong?</p>

<p>Since the graph goes through the origin, f(0) is = 0. So what is 0+ f(a)? f(a).</p>

<p>What did you all get on in that f(0) + f(a) = f(a) question.</p>