ACT April 10, 2010 Official Math Thread

<p>what was the one on cos2x?
-7/11?</p>

<p>i remember -7/11</p>

<p>I didn’t know tat one but yes 10 cos75 and 18x-15 I’m almost definitewas right</p>

<p>Consolidated List</p>

<p>16/60</p>

<p>5 teachers only taught math
96 was SA of the cube
800 for the one on 0.5
D was greatest out of a,b,c,d,e
100 was the boxes/area in 11 horizontal/vertical lines
62.5 for the geometric sequence
sides of parallelogram were 14,24,24
11 buildings had 6,7,8 rooms
3x=21
10cos75
-7/11= cos2x
18x-15
the graph on lemonade started at -5 and touched the x-axis when x=10
7 4-pack tomatoes
25 putunias
central angle in shaded sector of circle was 45 degrees</p>

<p>also,
anyone verify these?</p>

<p>7-tomato packs for the one on how many 4-packs can you make</p>

<p>45-degree central angle for the shaded area of the circle?</p>

<p>Wait what was the question for 3x=21 also to add to the list u could make 7 4seed things from30 single seed packets I think the one wih putunias was also 25</p>

<p>kk the one with putanias was also 25</p>

<p>yup 30/4=7.5=7</p>

<p>and 360/8=45</p>

<p>Both of those that u just said wazza are right however would u mind explaining the house question I didn’t understand it because they only gave u the value of 24 out of 25 of the houses</p>

<p>“would u mind explaining the house question I didn’t understand it because they only gave u the value of 24 out of 25 of the houses”</p>

<p>i forgot the question and what i putt…sorry</p>

<p>for the a(b^2)(c^4)>0 i got a(c)^2 has to be greater than zero</p>

<p>anyone remember getting (0, -c) for the rotation
(a+c, b) <---- i think
35 degrees for the angle between the side of the parallelogram and the y-axis?</p>

<p>It was 18x - 15? ■■■. How’d I get that wrong. I put 18x - 17.</p>

<p>Also, anybody get -x + 2 for the absolute value inequality one?</p>

<p>Hmm yup all those are correct wazza</p>

<p>I put 18x - 17 too…are we sure that it’s actually -15?</p>

<p>I thought u had to solve the absolute value question if u remember the question post it</p>

<p>I’m pretty sure it’s 18x-17…I forgot the question, but I remember putting that</p>

<p>-x+2, (0,-c) for rotation, and 35 degrees yes</p>

<p>Edit: i don’t know about the 18x one</p>

<p>I’m almost positive its 18x-17…because I double checked my math because I thought I messed up originally.</p>

<p>i got 18x-17 also</p>