SAT January 2012 - Math

Test Preparation SAT Preparation
61

<p>what was the proportional one? I put p was directly proportional to t</p>

62

<p>

</p>

<p>The sequence went like this:</p>

<p>12^10, 12^10+12^10, 12^10+12^10+12^10,…
OR
12^10, 2(12^10), 3(12^10),…</p>

<p>In order to make 12^12, the coefficient needed to be 12^2 or 144.</p>

<p>12^2(12^10) = 12^12.</p>

63

<p>Guys it’s 3/2. I had some memory loss after this test… The derivative with respect to x of x^2 - 3x - 40 is 2x-3, so the only relative min (thus absolute min) is at 3/2.</p>

64

<p>i think the proportion one asked for a value for Z. what did you guys get for it?</p>

65

<p>what was the proportional one? i put t…</p>

66

<p>Yeah I got t too, and I am pretty sure it’s correct unless I read the question wrong or something…</p>

67

<p>was it directly proportional to t</p>

68

<p>I think it was a: directly proportional to t. But I had some difficulty with that problem, so I’m not a 100% certain.</p>

<p>@rah For the z+y grid-in I put 150
it was like:
x+y+z=500
x-y-z= 200
so, 150 should be correct.</p>

<p>-1 so far.</p>

69

<p>what was the one with the TWO EQUAL areas… the triangle and the rectangle… i put 1:2…</p>

70

<p>What are the chances that -1 is still an 800? Pretty small right? I guess I could settle with a 780.</p>

71

<p>shimkihoon, I don’t remember that question. Did you have math experimental?</p>

72

<p>lappith. yeah… ugh its bugging me…</p>

73

<p>How about</p>

<p>If the area of a square was z, what was the shaded region?</p>

<p>I got dree dover door (code language)</p>

74

<p>I put directly proportional to t^2</p>

<p>If one of the constants is negative and you put a really big negative number for T, then the outcome would be inversely proportional, but the T^2 gets rid of this possibility I think?</p>

<p>@good
3/4 Z</p>

75

<p>I got 3/4z for the area of the shaded region.</p>

<p>Also, it has to be t, I will honestly die if it’s t^2 and I got 2 wrong on math.</p>

76

<p>dude i just did y=kx for the proportional one…</p>

77

<p>Goodjobbro, your are right. I plugged in 36 as the area. Found the shaded region to be 27 (3/4 of 36) so it was B.</p>

78

<p>yea it better be t because if I got that wrong I go from 3 wrong to 4 wrong.</p>

79

<p>is one wrong in grid in like a 760?</p>

80

<p>did anyone have one section with

  1. dog and cat owners
    and
  2. the volume of a pyramid?
    i had an experimental math section, so it’s possible that this was it (hopefully)</p>