June 2009 ACT Math Discussion

Test Preparation ACT Preparation
121

<p>there are going to be lines of symmetry at the “peaks” of the triangles on the edges of the panel. there are also going to be lines of symmetry on the “valleys” between the triangles.</p>

<p>so, if you connect one peak to another peak, you have four (not eight!!). and if you connect one valley to another valley, you have another four (not another eight!!). so the total is eight lines of symmetry (not sixteen!!).</p>

<p>i think people double-counted the lines by just counting the peaks and valleys.</p>

122

<p>ok I see now</p>

123

<p>I put 4 because you had to factor in the square in the middle which would not be symmetrical if you had 8 lines</p>

124

<p>It’s for sure 72 choices. THis is a common act math quetion…u simply multiply all the choices.</p>

<p>The 42 pie chart one was 21/29 because it said like in age range/not in age range. </p>

<p>So you do - 100-42=58</p>

<p>So it is 42/58 or 21/29</p>

<p>That’s the answer. I am sure of it.</p>

125

<p>what was 14.5 was that at the end of the test, like last 7? if so was letter was it A/F?</p>

<p>updated</p>

<p>1:3
560 (larges)
8 lines of symmetry
3.14 (something with the glass)
4 (det)
how much went to charity it was like $3 an hr (2hr for small/3hr for large)
240 (avg)
3:2:1 (jerome kevin seth)
(5,0) (the square 3cm side)
384 (surface area of cube)
intersecting lines
angle was 90deg
missing side was 12 (gave u like 20 for h, and a 3,4,5 tri)
3 the area of the rect think with kA
(a/c) for some sin/cos/tan thing - letter B
30tan52
60 deg chord
goes through quad 1, 3, 4
add 18 red marbles (very similiar to a practice test question)
circle was rad38 center was like (5,0)
ice rink 16 + 8pi
rad(16+x^2)
to make the equations infinite times by 6 (2x-y=8 and 6x-3y=4a)
pass ball around 5th
midpoint was 5
60 for the other side of rect box = 81000cm3
x<42 (or 48 i forget)
overtime $322.5
72 combinations of food
ADCB</p>

<p>questions
how much went to charity it was like $3 an hr (2hr for small/3hr for large)
what about the pie chart was that 1/3 - 42 def
side of rect like 4 (so 8x4)?
add .1 to slope = .22?
56xy-8xy something???
was something 14%
-6|-2+8|or something? what was the answer
plug in for that f(x) was like 8(x)^2</p>

126

<p>because of all those triangles you had to go in between each one</p>

127

<p>was on the one with the circle…puting A, B, C, and D in order around it?</p>

<p>wasn’t it A, B, C, D?</p>

128

<p>Yes but if you went in between the triangles the square would lose its symmetry thus making it 4 lines</p>

129

<p>no i think it was like dabc or something not sure though…it definitely wasnt abcd…at least from what i had. </p>

<p>Also, did anyone get like x>17 or X<17 for one of the inequality questions…?</p>

130

<p>It wasn’t A B C D, I don’t remember the exact but it was A _ _ B</p>

<p>It couldn’t be dabc because you HAD to start with A</p>

131

<p>I think
ADCB?</p>

132

<p>oh lol then yeah i do remeber that i think it might’ve been acdb? because wasnt c in between a and d idk thioughh</p>

<p>btw was dabc even a choice? I hope not! Idk why that sticks out in my mind!</p>

133

<p>I think it was ADCB because D was 5 units clockwise, C was 7 units clockwise, and B was 2 units counterclockwise. Total units was 15</p>

134

<p>hey guys wat do u think a minus 3 will b on this test…i sucked up on the math</p>

135

<p>it definitely was not 8 on the symmetry question. it was 16.</p>

136

<p>it wasn’t -6+|-2+8|, it was -6|-2+8|.</p>

137

<p>I think missed like 5-6 total… im hoping thats like a 33ish… =/</p>

138

<p>@Charlie Brown. Did you do that aboslute thing. -6+(+2)(+8). Or something like that. I just w/ abosulute the - changes to a positive</p>

139

<p>yep it was adcb</p>

140

<p>smarts-</p>

<p>when you counted lines…you probably counted some twice</p>