Official January 2013 International Math Discussion

<p>This is the very last list:</p>

<p>Consolidated List (49/54):
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
a=6 when a/3=(a+2)/4
7 weeks needed to save $250 (he already had 75, he gets 25 dollars a week)</p>

<p>posted by @Jersey13
who later said he/she got a 2400 so…</p>

<p>“xz is the smallest”
“sqr(15) is x when volume of cube is 90”
“9 is difference of similar triangle perimeters”
"7x (7x+1=3, which of the following equals 2)
(x-y)^2>0 (choice II) will be positive, out of 3 options
a=6 when a/3=(a+2)/4</p>

<p>Anyone remember those in details?!</p>

<p>guys? Y is everyone here so lazy? where IS everyone? SAT is history for u guys already?!</p>

<p>“xz is the smallest”:
Q) x<0<y<1<z which is the smallest? answer choices had yz, xy, xz n a couple others</p>

<p>"(x-y)^2>0 (choice II) will be positive, out of 3 options":
Q) if x>y, then which of the following must be true? 1. x^2-y^2 2.(y-x)^2 3. x+y</p>

<p>“a=6 when a/3=(a+2)/4”:
Q) what is the value of a when a/3 = (a+2)/4?</p>

<p>@2200andbeyondXD Is that what you have asked for? Or do you want to know how to solve them?</p>

<p>nope that’s about it… thanks!</p>

<p>“sqr(15) is x when volume of cube is 90”
“9 is difference of similar triangle perimeters”
“7x (7x+1=3, which of the following equals 2)”</p>

<p>what about these???</p>

<p>MATH LIST (49 answers):</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(6) = 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 (II and III only)
I is only way TANYA can be spelled (the code for N was 12)
MP and NP are equal (the two radii)
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 n * 10^3
rp - pr = 0
9/25 or 0.36 is Oak to Maple ratio
1 is the remainder of n + 3
9 is difference of similar triangle perimeters (27-18)
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
a=6 when a/3=(a+2)/4
7 weeks needed to save $250 (he already had 75, he gets 25 dollars a week)</p>

<h2>30 degrees was the answer for angle PST (equilateral triangle)</h2>

<p>Try to remember the remaining ones…</p>

<p>There was one where x is an integer > 1 so find y? anyone?</p>

<p>“sqrt(15) is x when volume of the cube is 90”:
Q) A cube with dimensions 3x, 2 and x was given (figure). Volume is 90. So x=?</p>

<p>“9 is the difference of similar triangle perimeters”:
Q) (figures) length of two sides each were given for two triangles, which are said to be similar triangles. Find the difference in their perimeters. (the smaller triangle’s perimeter is 18 and the larger one’s is 27)</p>

<p>“7x (7x+1=3, which of the following equals 2”:
Q) If 7x+1=3, which of the following is equal to 2?</p>

<p>2200andbeyondXD These are correct, the 7x one you get x = 2/7 and they asked which one of the answers (7x) will give you 2 so 7*2/7 = 2. sqrt (15) is also correct but I can’t remember the question, but I can clearly remember the answer</p>

<p>@333770 I don’t remember any question like that. Do you have some more info on that question.</p>

<p>The question I meant is x>1 then y=? – that one</p>

<p>@hopingforbetter Oh hold on, I think it was that one “2 is the answer for value of k when 2x^1/2 - x^(k-3/2) = x^1/2” it was y instead of k. Part of the given was x is an integer > 1.</p>

<p>I simplified it to x^1/2 - x^(y-3/2) = 0, and since x is an integer > 1 I took x to be 4 (easier for calculation), divided ln2 by ln4 = 1/2, added 3/2 and got the answer: 2.</p>

<p>hey guys, do u still remember about Tandra question in which each number is assigned to certain letter (1-26). What answer did you get? I was stuck when doing it.</p>

<p>@SATtakers Tanya you mean, you have the codes of everything (T, A, Y) except N, and you look at the choices - one of them was obviously wrong, you’re left with two answers, one of which had a number assigned to N which was already given in the code (taken by another letter) so you’re left with one answer and you can conclude N’s code was 12. (See the answer in the list above)</p>

<p>does anyone remember the question whose answer 1520 ?</p>

<p>@333770 Yes, that answer to “x is an integer > 1, then y=?” is 2.</p>

<p>@mohamedbahr I tried, but couldn’t succeed in recalling that question. I just remember a small part of it.</p>

<p>They gave three digits (probably 3,5,7 but I am not sure) and also xxx(three digit number) - X/8.
The product of those three digits is equal to the second expression. X=1520</p>

<p>Alright, so this is the final confirmed list.</p>

<p>January 26, 2013 - MATH (50/54 answers):</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(6) = 6
$1 million in profit
60 is area of triangle in cylinder
2 is the answer for value of y when 2x^1/2 - x^(y-3/2) = x^1/2 (x is an integer > 1, find y)
(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 (2/5) 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 (II and III only)
I is only way TANYA can be spelled (the code for N was 12)
MP and NP are equal (the two radii)
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 n * 10^3
rp - pr = 0
9/25 or 0.36 is Oak to Maple ratio
1 is the remainder of n + 3
9 is difference of similar triangle perimeters (27-18)
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
a=6 when a/3=(a+2)/4
7 weeks needed to save $250 (he already had 75, he gets 25 dollars a week)
30 degrees was the answer for angle PST (equilateral triangle)</p>

<h2>1/8 for the question 5/x=4 find x/10</h2>

<p>The 4 remaining answers were probably easy ones (mostly), but try remembering them so we can have a complete list.</p>

<p>Found more: f(x) x+ k , g(x)=kx , answer was 6? And another one where the equation of a graph was given y=3x+1 and we had to check from the choices which one wasn’t on the graph, was it (2,7)? Can anyone confirm? Close to completing the list.</p>