<p>shimshimhey: sqrt(2x+3x+4x)=5x
Find x by using the quadratic formula.</p>
<p>It was probably A, B, C, D, and P...I think I put "C" because I kep thinking that when you first reflect, you end up at C, even though it wasn't the final answer.</p>
<p>All well, stupid error :-/</p>
<p>julie i did that. my calc read 0 and 1.8... ***FFF
<a href="http://img156.imageshack.us/img156/6794/hahhfm7.jpg%5B/url%5D">http://img156.imageshack.us/img156/6794/hahhfm7.jpg</a></p>
<p>^^ it has to be 25x^2, not 5x^2</p>
<p>You forgot to square the 5. The equation was 25x^2-9x=0.
A= 25
B= -9
C= 0</p>
<p>-(-9) +/- sqrt(81) over 2(25)</p>
<p>DAMMIT! WOWWWWWWWWWWWWwwwww</p>
<p>yea ur math is correct except u didnt square the 5 as well. it should be 9X=25X (the from X 25 is squared) and u cancel the X's to get 9=25X. the divide by 25</p>
<p>Does anyone remember the two problems on the grid-in section that had 8 as the answers?</p>
<p>^
the average of this set of 7 numbers was equal to the set's median
and
the area of this weird 5-sided polygon</p>
<p>julie you are correct</p>
<p>laugh-cry-smile: Thanks! Was the 5-sided polygon the rectangle that had an area of 6 and a triangle with an area of 2?</p>
<p>They were the area of the figure (where you made a triangle and a rectangle) and the one where you found the length of the side of the triangle.</p>
<p>no problem (:
and yep !</p>
<p>yeah i got two 8s.
my friends were like "omg theres no WAY there could have beeen TWOOO eights" and i'm like :( oh ok...</p>
<p>but oh mann thanks for getting 8s as well everyone!</p>
<p>does anyone else that has experience with the SAT think there'll be a curve of -1?</p>
<p>idk if this is right but i thought the reflection question was solved like this
<a href="http://i259.photobucket.com/albums/hh298/1234abc4321/mathrpoblemoa4.jpg%5B/url%5D">http://i259.photobucket.com/albums/hh298/1234abc4321/mathrpoblemoa4.jpg</a></p>
<p>no cuz the drawing is wrong
and ur suppose to reflect first with line L (or line that's more horizontal)</p>
<p>1234 that's how i did it too....i'm not sure what to even think about that one...</p>
<p>also, columbia lover, i don't think order matters...try it</p>
<p>what do you mean about the drawing being wrong?</p>
<p>well... that wasn't a drawing i remebered
line L had positive slope so it was more like / shape</p>
<p>and there was one point that was left to line K and pt P</p>