September 2010 ACT Math Discussion

<p>YES! I totally guessed on that one</p>

<p>maximum wrong for 36??</p>

<p>^A big fat 0.</p>

<p>^gaah stupid coordinate question. i looked at it and im like…uh x and y are positive so quad 1 LOL</p>

<p>Area of the trapezoid?</p>

<p>double post</p>

<p>^I believe it was 24</p>

<p>Someone should start the list of answers…</p>

<p>@Slurpee 24 i think</p>

<p>What was the answer for the one with the steps?</p>

<p>vab22, can you please elaborate?</p>

<p>I don’t exactly remember but it was something about starting with one and then increasing by one for the next 25. But then in the picture it looked like it was increased by 2. haha idk i’m probably not making any sense</p>

<p>the only one i know i definitely got wrong was the weirdo coordinate problem with the three kids and their position from their school…someone want to tell me how they worked it out ? =/</p>

<p>^Yeah you are right it’s increasing by 2 every time, so it’s just 2n +1 where n is the number. The 25th would be 51 blocks.</p>

<p>dancingdoctor you just needed to draw it out with the school being the origin and then find the midpoint between the two kids. The answer was like, (-1,3) or something.</p>

<p>oh and vab22, the answer was 51 because you just multiplied by 2 and added 1</p>

<p>@dancingdoctor plot the points on a coordinate plane, you know its a straight road they live on, and Huang or whatever lives on the midpoint, do find the midpoint of the line with the school being (0,0)</p>

<p>oh okay, awesome, i think that’s what i put. thanks :)</p>

<p>dancing doctor, it was one block left and one block north i believe. i labeled the coordinates for the 2 kids for whom info was given…so (-5, -2) and (3, 4) and then used the midpoint formula to get (-1, 1). hope that helps</p>

<p>ahh. that makes so much sense, but would i think to do all of that? nopee</p>

<p>what did the -1, 1 choice exactly look like?
was it the only one with 1 and 1 as the numbers in the answer? lol</p>

<p>No the answer would 1 west and 1 north relative to the school.</p>