Jan 2008 Math

<p>wut the heck there were no decimals in answer, I am pretty sure answer was like (sqr2)-2 or sumthin cuase if u see the radius is 2 and u can make a right triangle with 2 of the sides equalling to 2 and the other hypotnus is like 2(sq2) but i dunno i dont feel like doin math right now but i am pretty sure its like that or sumthin</p>

<p>Kumar...yeah it was only the area of the rectangle</p>

<p>What did you guys get for the average speed problem?</p>

<p>carsonne, i got 1 too.</p>

<p>does anyone remember the answer to the number line question.... evenly spaced... what is y? </p>

<p>do u remember what letter the correct choice was? thanks.</p>

<p>y was 6 if I remember pton</p>

<p>flux_cap</p>

<p>that was the weirdest question ever!! a number 18...</p>

<p>i couldnt think of anything but 30.</p>

<p>i got sqrt 2 - 1 because the 45 45 90 triangle and you get root 2 for the diagonal minus 1 which was the radius of the big circle... i was pretty sure i was right</p>

<p>oh darn. i got -1 for that question. =/</p>

<p>AHH, I just remembered the absolute value one! y=f(x) had a slope of -1, and it was a Medium difficulty question, so I kept thinking that it can't be too hard. It was either the V shape or the upside down V. I know that absolute value means that it's greater than 0, but if you have a negative in front of the absolute value, then it means that it's negative. I don't know if they expected me to think about its slope on a Medium question, but I kind of said in my head, "Darn you collegeboard" in my head as I erased the answer for the V and put in the upside down V. I didn't know if it was right or wrong, but I had a feeling that I was just giving away a question. Do they know that anyone can just put absolute value into their graphing calculator, or do they realize that fact and know that most kids won't know that it's a negative absolute value(IS IT?)</p>

<p>i had a 45-45-90 with legs of 2 and hyp. of 2sqrt2, then u subtract two from that and get sqrt2. thats the diameter of small circle, for radius divide by 2.</p>

<p>y was 6, u do x as 4.5</p>

<p>oh yeah HOW DO YOU DO The radius of the really small circle one????? I put .414 or soemthing... pretty sure got right b/c lots of ppl said that but HOW d o you get it???</p>

<p>i dunno if it was (sq2)-2 but it was like answe bc or d</p>

<p>yeah y was 6...haha i figured it out in the car on the way home bc i just randomly guessed when i filled it in cuz i ran out of time</p>

<p>pton...yeah i got -1 at first but i realized that i got my - and + numbers mixed up</p>

<p>@griffon, how exactly do you do that again? The diagonal was 4*SQ(2), and the diameters of the circles combined=4, but then I got confused because both the diameter of the small circle AND the space between the corner of the Square and the circle were left, and I didn't know the length of the space between the corner and the circle.</p>

<p>does anybody think its sad that on the math, very little math skills are needed anyway. I reason it out in my head like the pole one or plug numbers in but i never use formula's and such</p>

<p>Was the absolute value one the V or the upside down V? The actual slope of the line in the example was negative, and while absolute value always makes it greater than 0, I thought that since y=f(x), something there was negative, so it would be a negative V.</p>

<p>@citybirds.. look at the post right above yours. i explained how i did it. but i got .7 lol. i still think i'm right.</p>

<p>kumar, i plugged in numbers and unless i plugged in x values wrong, its still a right side up v.</p>

<p>Kumar...it was normal v...i just graphed it on my calc to make sure.... and the radius of the big circles was one...and thats what i made the 45 45 90 with... i got what you got city birds and i'm pretty sure i got that one</p>