<p>oh dam. that sucks. how many pts wud they take off if u do left to right lol
for sum reason i tried googling this and couldnt find it :/</p>
<p>one of the questions was a linear regression.</p>
<p>it said let x=1999 = 0</p>
<p>so for plugging in the x for 2009 into the linear regression u put in 10? cus its 10 after 0?</p>
<p>[MathBJun09</a> - Fullscreen](<a href=“http://www.scribd.com/word/full?id=16725606&access_key=key-z34n8c6r5iuzorye4zg]MathBJun09”>http://www.scribd.com/word/full?id=16725606&access_key=key-z34n8c6r5iuzorye4zg)</p>
<p>all seems to be right except #16 should be (3), not (2)</p>
<p>the last one was 6
Reason: 2pi divided by pi/3</p>
<p>the proof was either AAS OR SAS.</p>
<p>I dont remember the algebra one, but it was either 3/2 or -3/2, i dont remember</p>
<p>the combination one was either 918/1024 or 459/something if you simplified</p>
<p>I just used binomcdf on my calculator lmao.</p>
<p>number 16 is 3 not 2.</p>
<p>Explanation: it was 5c2 times 2xto the power of 3 times (-3) to the power of 2.</p>
<p>Clearly the answerer forgot to put -3 in parantheses which is the reason he or she got a negative answer.</p>
<p>it was 720 somthing.</p>
<p>if there’s a graphing mistake, most teachers will let it got if all of your stated cooridinates are correct</p>
<p>Did you have to list the x and y values for the A’‘B’‘C’’ triangle? It never said to do that, so when I graphed it I just labeled each point as A’‘B’‘C’'.</p>
<p>so population standard deviation = sample deviation? wow, my math teacher specifically said it wasn’t</p>
<p>you just really needed accurate coordinates.</p>
<p>you should be fine.</p>
<p>im expecting 95+ on this test, which I would be happy with since math b is the hardest of all the regents.</p>
<p>Yeah, I thought Sx on the calculator was population deviation. Damn it.</p>
<p>Also, for the one with finding the angles with cosine in Part III:</p>
<p>I messed it up completely, however, I showed work, but did not get the right answer, or even use the correct formula. Will I at least get a point?</p>
<p>you misunderstood what i said, i said population deviation IS sample deviation (Sx) according to the person who uploaded his/her answers in the scribd link, and that i thought it wasnt but apparently it is since it was 10.2</p>
<p>if you used the wrong formula you wont get any points</p>
<p>all you had to do was use your calculator for almost all the questions…</p>
<p>For the triangle area one, i got the answer in a minute by using heron’s formula, which our math teacher taught us. It’s a good thing he’s also a college professor. </p>
<p>btw it was 8200 for the area one</p>
<p>has anybody gotten their global regents grade back yet???</p>
<p>guys, population standard deviation is not Sx, it’s still the o-x one. </p>
<p>According to my blue Barrons book when you get a problem that says x! in one column and f! in the other just go to STAT-EDIT- then enter in x! values in L1 and f! values in L2. Then go back to STAT- CALC- 1-Var Stats- Enter- L1- , -L2 - Enter .</p>
<p>The second to last value (o-x thing) is the population standard deviation. Plus, if i remember correctly, there was a problem in one of the practice regents that i took that asked for the population standard deviation…and the answer you get from following the steps from above was the correct answer choice. </p>
<p>Check out number 27 on the January 2009 Math B Regents. It’s a short answer question that asks for the population standard deviation. I worked it out and the answer under o-x is the answer in the scoring booklet for that regents :)</p>
<p>Overall the test was decent, and was easier than the January 09 one. Hope we all did well! :)</p>
<p>One the bright side, that is the last Math regents we will ever have to take!!!</p>
<p>the answer was 10.2.</p>
<p>It was a frequency question.</p>
<p>yeah, it was 10.2, the Sx thing is something called deviance, not standard deviation, even though they sound the same. Sx is pretty much sigmax squared.</p>