March SAT Math Thread

[Linger]

<p>@davissu</p>

<p>it must work for all number that work n not just 8.</p>

[kameronsmith]

<p>Was the divisibility problem experimental?</p>

[Jersey13]

<p>

It was 16.</p>

<p>Thanks for confirmation on the election question.</p>

<hr>

<p>Consolidated List (47/54):
NO EXPERIMENTAL QUESTIONS</p>

<p>88 for median temperature
8pi/3 for the shaded region of the circle
15 ice cream possibilities
20 for the 10th term in the 3 digit question
10.6 or 53/5 for the y coordinate when the slope was 6/5
800 largest square
65 degrees value of X
x = 3 for when f(x) * g(2) = 6
1 million in profit
60 is area of triangle in cylinder
2 is the answer for value of k when 2x^1/2 - x^(k-3/2) = x^1/2
(5,0) is x-intercept of parabola
4 is absolute minimum of 3|x-4| + 2
Sqr(2) is distance between the midpoints of the two lines
20% increase on price of bagels
10r = p
K - 4 is answer for (x-4)(x+4)
11/17/23/5 for one of two positive prime numbers that add to 28
5 workers needed to finish the job in 2 hours
0.4 probability of picking a value that is also in the second set
c = 0 when k = 3
1520 is x value
4 is Double root of semi root
N is divisible by 2 and 4
I is only way TANYA can be spelled
MP and NP are equal
43 Degrees in the two parallel lines
110 Degrees for angle in isosceles triangle
3 is the number of right angles that aren’t possible in a quadrilateral
xz is the smallest
6 is perimeter of triangle which crosses through the centers of the circles
100 + (J + K + L)/3
150 coffee flavored candies
(10, 9) is Point C on the square
B was most change in votes from 2002 to 2004
0 is difference in average students at both schools
sqr(15) is x when volume of cube is 90
16 is the value for x * 10^3
Rp - pr = 0
9/25 is Oak to Maple ratio
1 is the remainder of x + 3
9 is difference of similar triangle perimeters
108 is the fourth term in the sequence of multiples of 3
The machine’s graph was Linear for 10 hours, slope of 0 for 5 hours, and linear for 12 more hours.
7x (7x+1=3, which of the following equals 2)
(x-y)^2>0 (choice II) will be positive, out of 3 options
The largest electoral difference was B, in the top left. (2002–2004)

</p>

<p>Kameron the largest electoral difference answer is already on the list as “B was most change in votes from 2002 to 2004”</p>

[strawbearries]

<p>9/25 is Oak to Maple ratio
xz is the smallest
c = 0 when k = 3</p>

<p>I don’t remember those questions at all. Can someone remind me of the context?</p>

[laurora]

<p>if n is a number, and 2n is divisible by 8, which must be true?
I. n is divisble by 8
II. n is divisible by 4
III. n is divisible by 2 </p>

<p>edit;
you had to get the lowest possible value, otherwise you could’ve chosen 8, 16, 32, etc (they all are divisible by 8)</p>

<p>2n (if n was 4) would be 8, so 8 is divisible by 8.</p>

<p>4 is not divisible by 8, so it’s just II and III.</p>

[davissiu]

<p>if n is a number ,and 2n divisible by 8, which must be true.</p>

<p>let say N=4, so than n is divisible by 2 and 4, </p>

<p>if N=8, n is divisible by 2 ,4 and 8 ?</p>

[laurora]

<p>i agree with strabearries…i have no idea which questions those answers are referring to =P</p>

[kameronsmith]

<p>@Jersey13: Ooops! Nice catch.</p>

<p>Can someone confirm the divisibility problem wasn’t experimental?</p>

[silenceizsik]

<p>for the x-intercept of the vertex, after finding ‘k’, the equation came out to be x^2 + 8x + 15; thus, the x-intercept is (-3, 0), not (5,0)</p>

[davissiu]

<p>9/25 is Oak to Maple ratio</p>

<p>on the oak maple question, they give you a diagram where maple is 50% and sth else is 32%, and oak is X%, then they ask you what is the value of the number of oak / number of maple</p>

[boston1993]

<p>I’m pretty sure the divisibility problem was not experimental.</p>

[SLightManifesto]

<p>

9/25 is Oak to Maple ratio
xz is the smallest
c = 0 when k = 3

</p>

<ol>
<li><p>There was a pie-graph showing 50% of the trees in a city were Maples. 32% were “Other”. And there was no label for Oak (but a simple 100-50-32 would give you that it was 18%). Then you just simplified 18/50 -> 9/25.</p></li>
<li><p>x < 0 < y < 1 < z . Which of the following would be the smallest? And the answers were stuff like x^2, zy, y^2, etc… the answer was xz.</p></li>
<li><p>There were 2 equations: a = .5(6b - 6) (or something along those lines) and c = a - 3b + 3. If you distribute the first equation and manipulate it a little, you get a - 3b = -3. Then you just replace that into the 2nd equation to get c = -3 + 3 = 0.</p></li>
</ol>

[kameronsmith]

<p>

for the x-intercept of the vertex, after finding ‘k’, the equation came out to be x^2 + 8x + 15; thus, the x-intercept is (-3, 0), not (5,0)

Wrong. IT came out to -8, I believe.</p>

[jjtheairplane]

<p>@davi
it asks which MUST but correct, if any n chosen will be divisble by 2 and 4, because 4 is the lowest, 8 will not be correct if n is 4</p>

[strawbearries]

<p>Thanks davis and manifesto.</p>

<p>EDIT</p>

<p>Another question.
Does anyone remember if 0.2 was one of the choices for this question: 0.4 probability of picking a value that is also in the second set</p>

[thrill3rnit3]

<p>@davis: it must work for ALL cases, not just for a few.</p>

[mzargar721]

<p>confirm, not experimental</p>

<p>answer was II and III</p>

[boston1993]

<p>I answered II and III as well.</p>

[somead896]

<p>Divisibility wasn’t experimental. n has to be divisible by 2 and 4</p>

[davissiu]

<p>@ thrill3rnit3, jjtheairplane
thank you, got it omg…
so probably i have like -4 sth like that</p>