January 2010 Math thread

Test Preparation SAT Preparation
521

<p>Does anyone remember how many bacteria there were? I can’t seem to find that answer on the list of answers we have</p>

522

<p>@darks0ulz i really have no recollection of that problem. do you know the exact question?</p>

523

<p>-1<x<0 and 0<y<1 then combined them into xy, x/y and y-x and asked which ones were correct. Only xy was correct.</p>

524

<p>also something with x=2 and x=-6 or something like that where its undefined and i think there was another undefined question im not sure tho</p>

525

<p>not to sound desperate but can anybody please explain the wood question because although I can’t remember the question, I don’t think I got 9y/4. I’m pretty sure I solved it using proportions</p>

526

<p>also may have been a question where -3 might have been a value for x when it was like 3-x=something i dont remember tho</p>

527

<p>What about the problem with the hose filling up both containers? Wasn’t it 7.5?</p>

<p>Also, I don’t remember this problem anymore: 5^3 = 125</p>

528

<p>15/2 is the hose question, it’s already on my list.</p>

529

<p>

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<p>It was the one with “a” and “b” and the symbol.</p>

530

<p>Thanks silverturtle, now I remember. Yes, I got that.</p>

<p>Okay, what about the question with the parabola and the greatest y-value’s x-value? Wasn’t that x=2?</p>

531

<p>Wasn’t the point (2,5)?</p>

532

<p>Ok, good, 1250 sounds right to me. I think that’s the correct question and answer there</p>

533

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</p>

<p>Good, so we concur.</p>

534

<p>Hmm wasn’t there some question also that had a range of what the answers could have been? Something like finding an x value or a y value that satisfied certain requirements?</p>

535

<p>whoa i thought bacteria was 3250 did ne1 else get tht?</p>

536

<p>I think that’s THIS: “I only for the combination of the two inequalities”</p>

537

<p>@Jamezz: yeah, I remember that one. It was a fill-in with a graph and it was something like, find a y-value where x > whatever.</p>

538

<p>@scholar- if the other half of the system of equalities (in addition to -1<x<0) was 0<y<1, it was definitely not experimental. That problem had roman numerals I, II, and III</p>

539

<p>No, I was pretty sure there was one free-response where you actually had to come up with a value that satisfied the requirements. I seem to think my answer was 2.5? I can’t remember the question too clearly though</p>

540

<p>What was the bacteria problem?
I either put 3250 or 1250 but does anyone remember it?</p>