ACT June 2010 - Math

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121

<p>are you sure fresh101?
Do you remember if that was question # 44</p>

122

<p>Yeah, I thought the math was pretty decent. The first 40/44 questions were easy but the last 16 were kind of difficult (spent too much time on the cylinder one). I hope I still got over a 28, though.</p>

123

<p>so how to do that 14000 one…with the graph…</p>

<p>i don’t understand the question…it says the largest profit?</p>

124

<p>The answer to the rhombus problem is 4 and I’ll show you with a diagram:</p>

<p>

<a href=“http://img88.imageshack.us/img88/267/rhombusproblem.png[/img]”>http://img88.imageshack.us/img88/267/rhombusproblem.png

</a></p>

<p>The radius, as demonstrated by BC, is 4 as given by the problem. You can see that AD, a side length of the rhombus, is clearly congruent to the radius BC. Both are diagonals of the rectangle ACDB.</p>

125

<p>What were the other choices for the 14000 one?</p>

126

<p>@downfall369</p>

<p>it’s like</p>

<p>A.9000
B.10000
C.12000
D.14000
E.20000</p>

127

<p>Damn…I wanna say i picked 10k or 12k as a guess…I don’t think I chose 14k :(</p>

128

<p>i knew 12000,20000 or other choices were wrong…</p>

<p>but i don’t know how to get 14k - -</p>

129

<p>if possible can soebody possibly post a lot or all of the math answers that you remember in one message?</p>

130

<p>it is funny how i solved that question with the given radius i noticed that another line intercepted it the very line which was being asked i cut the rectangle in fours and notice that both the opposite sides were the same so chose 4 because the other diagonal was 4</p>

131

<p>@SoccerRyan</p>

<p>I may be mistaken, but I thought point “D” on your diagram was on the circumference on the circle…That is I thought the rhombus touched the circle, not the rectangle? This I’m not too sure about.</p>

132

<p>@?: I’m sure that the rhombus was inside the rectangle which was inside the circle, making point D not on circle. There actually weren’t any labels on the test, but I’m sure you knew that.</p>

133

<p>the rhombus touched the midpoints of the rectangle and rectangle was located in the circle</p>

134

<p>Bleh I I thought it looked like this <a href=“http://img229.imageshack.us/img229/929/blehb.jpg[/url]”>http://img229.imageshack.us/img229/929/blehb.jpg&lt;/a&gt;&lt;/p&gt;

<p>I’ll take your word for it, but can anyone else confirm that he’s right? And all 4 midpoints? I don’t remember them saying it touched the midpoints tbh >></p>

135

<p>does anyone remember if the awnser to the rhombus question was awners “C”. I know the awnser is 4 but I guessed on Question #44. Was that question the rhombus question? And if it was does anyone remember what the order of the awnsers was I think it was like this:
A) 1
B) 3
C) 4</p>

<p>I know I put “C” but does anyone remember if C was 4?</p>

136

<p>What about the one that asked how long it would take to inflate the cylinder? 1.3 is what I got.</p>

137

<p>UVA, I think four of the answer choices were 4, 6, 8, 10.</p>

<p>I think all five were 2, 4, 6, 8, 10 in that order.</p>

138

<p>Yea but do you remember what # question the rhombus one was? I remember having to guess on question # 44 but I dont know if it was the rhombus question</p>

139

<p>The choices were 2,3,4,6,8. I guarantee it. So far only one wrong. For the llast one, I used synthetic division to get it down to a quadratic equation, and then I got imaginary answers. My friend graphed it on a calculator and he got only 1 solution at two, so I;m very confident it was 5/4 +/- i sqroot(23)/4, which was choice D I believe.</p>

140

<p>Rhombus was 50 something I"m pretty sure… I could see it through my CR section so it was second to last page.</p>