<p>if i remember correctly, the problem said that when the fan was fully opened, it resembled a semicircle…</p>
<p>@eviL: wait…if that was exp then i had that question
and im pretty sure i had wri exp</p>
<p>@daem0n, multiple version of test, i def had exp and theres 2 FR lists on the posted answers… its annoyin xD
@overrated, i put 30… but ppl tell me im wrong and said that there were 6 angles to divide. i only counted 5 angles on the open fan diagram… (triple checked) … so idk…</p>
<p>@evilpanda,</p>
<p>i counted 6 in the last picture</p>
<p>angles or lines?</p>
<p>ok for the 16, 8 times greater is bigger number howd u get 9 root 2?
isnt it 2*8=16
2+8=10?</p>
<p>sticks. 0uifdlka;jf;gag</p>
<p>@ridwan16: 8 isnt 8x 2…one # has to b 8x the other</p>
<p>i guessed 9 root 2 first but i changed it… how it is that answer tho? what do you multiply? and isnt root 4 too?</p>
<p>wait so if the # of unique students was 124, what question has the answer 48? i’m blanking out right now.</p>
<p>@kinetix- if you replace a with 1 and b with -6 you get (1,10), which was given in the problem…so if you scroll through the table the only one that was an answer was (9,10) and 5 doesn’t work because that equals (5,-6) not (5,10)</p>
<p>how do u tell which section is experimental?</p>
<p>
</p>
<p>You are incorrect. I believe the first point was (1,10).
Plug it into the equation.
y = a(x-5)^2 + b
10 = a(1-5)^2+b
10 = a(-4)^2 + b
10 = 16a + b</p>
<p>Now plugin (9,10)
10 = a(9-5)^2 + b
10 = a(4)^2 + b
10 = 16a + b</p>
<p>The “trick” in this equation was realizing the negative in -4 didn’t matter because it’s squared.</p>
<p>@ridwan16: x(8x) = 16
8x^2 = 16
x = √2</p>
<p>was the 1/9 question experimental?</p>
<p>still confused on the question about the fan. pretty sure that the problem stated that in the last picture, the fan was fully open. the problem stated that it had 7 sticks. the last picture had 6.
if it was opened 5/6 of the way, what is the angle measure of each of the angles? </p>
<p>…</p>
<p>you didn’t need the pictures to figure the problem out.</p>
<p>there were 6 sections, with 7 sticks.</p>
<p>if the fan was fully open, each section was 30 degrees. if opened 5/6 of the way, 30 x (5/6) = 25, since each angle was equal through the 6 sections.</p>
<p>
</p>
<p>Initial point was (1,10)
f’(x)=2a(x-5)
Set equal to zero; critical number at x=0
First derivative test shows that (5,__) is a minimum
This means x=5 is the axis of symmetry
delta(x) to get from (1,10) to AoS is 4, so add 4 and 5 for x-coordinate
(9,10)
QED</p>
<p>yo there are definitely 2 points not 3 in quadrant I–how was this hard…the points were labeled?</p>
<p>and was one of the fill-ins 1/9?</p>
<p>dj04x7… u do know that makes no physical sense right? take a fan and close it evenly 1/6 of the way… theres still guna b the same # of sections… it jus gets smaller.</p>