<p>I'm going to be lucky if I got a 680 on this...</p>
<p>yo how do you get 8.125?...
(4+2.5)x2.4375/2</p>
<p>Isnt that 7.92?</p>
<p>yes....ok lets just SAY it said trapezoid then it is around 7. i reallly hope it did!</p>
<p>they said trapeaoid... im sure its 8.125</p>
<p>if they said it was a trapezoid, then its not 8.125</p>
<p>base 1 of the trapezoid would be 2.5 because its given.
base 2 of the trapezoid would be 4 because 2x2 = 4
the height you had to find by dividing 2.5 by 2 and finding what y was equal to at either -1.25 or 1.25 which came out to be 2.4375.
then you do ((base1 + base2)h)/2 which is equal to 7.921875</p>
<p>you can't just estimate the height to be 2.5, if you did then you got 8.125</p>
<p>seriously, theres nothing more to this problem then the solution I provided, unless it didn't say trapezoid of course</p>
<p>wth for the "trapezoid" question</p>
<p>((b1 + b2)H)/2</p>
<p>((2.5+4)2.5)/2 = 8.125 it doesnt give you anything in the 7s</p>
<p>there was an answer 8.13</p>
<p>The height is not 2.5 but f(1.25) where it is 1.25 due to symmetry.</p>
<p>but...but...but... ****</p>
<p>6 wrong - and i thought i was good at math</p>
<p>what's considered a good score??</p>
<p>yeah most people just estimated the height, f(1.25) = 2.4375 thus its 7.9</p>
<p>You definitely are good at math. I know a lot of kids that don't even try to take the test, and if they do, they would do horrendous. The fact that you messed up due to a small oversight doesn't mean you're bad at math, just that you were careless.</p>
<p>There's a kid in our school who we had on our team during a math relay. His problem clearly said to add the number he would receive from us to his answer, rounded to the nearest hundredth. Instead of 3.99, he put 4 and we were mad, but we never once said he was bad at math.</p>
<p>i dont know but i dont think you can just assume the height is 2.5. if you 1.25 into 4-x^2 you get Y= 2.4375 and i used that for the height. o well...i guess we'll find out some day!!</p>
<p>don't even say you're bad at math!!! this is actually my second time taking the same exact test and i STILL might not get an 800, haha. don't sweat it.</p>
<p>lol same xD its ridiculous of collegeboard, those idiots.</p>
<p>anyways, I do feel like a failure that 12% of the people get 800s on this test :(</p>
<p>thanks for the words of wisdom/hope/encouragement/whatever...</p>
<p>i agree... i am good at math... comparatively to a lot of people</p>
<p>but... to get into a good college you have to be great at math... you cant make the stupid mistakes...</p>
<p>i've missed so many EASY points in math competitions... id be in first place... instead i have to settle for fourth ... my lifes story</p>
<p>Guys, there's always going to be people better at math than us. I've decided to just push on with my life and make the best of it.</p>
<p>niiice lifelessons guys ..but uhm
abssolute value of tangent something ..... what was ur answers? haha</p>
<p>What was the answer to the period of abs(tan3PIx) or something. I know that it was absolute value of tangent, but not sure about the inside. I think I put 1/3 or something. The absolute value confused me! W/out it, it would have been 1/3 for sure I believe.</p>
<p>How about the shift of the sinx two pi over to the right or something? I put sinx(x-pi/2), and graphed it, and I think it was right. </p>
<p>How about the standard deviation problem? I put the answer with 8,10,10,10,10,12 or something similar to that...I'm so scared of getting these wrong. :(</p>
<p>I omitted 11. ELEVEN omits. :(</p>
<p>yeah, its so discouraging not to get an 800 on this. when i got my scores last time i remember thinking "great, i'm good at math but i can't prove it on a stupid one hour test." in reality this test will not be considered the deciding factor in you being accepted into a good college. If you truly are "good" at math there are much better indicators than standarized tests.</p>
<p>yeah i dontremeber the tan one but got teh same thing for the sin</p>
<p>yah it was absolute tan.. 2x? or x? cant remember..
and the answer choice was like pi/2 or pi/4.. i coudlnt debate</p>
<p>The shift of the sinx2pi over to the right thing.. thats what i got too.</p>
<p>The standard deviation i think i put like second to the last choice, D...</p>
<p>abs(tan 2x) - period was pi/2???? plzz plz say i'm right!</p>