<p>yea. courtette and cd8705 are 100% right</p>
<p>there was one question about an arithmetic sequence: 1,8,15,22,...
I can't remember what it asked: Which number is the NEXT term of the sequence or which numer is A MEMBER of the sequence. </p>
<p>What did it exactly ask?</p>
<p>just add 7 until you hit one of the answer choices... I think it was C, but I didn't check the other answer choices. (ARGH what if they had a smaller number for E?? Although I'm sure the choices were in numerical order from lowest to highest)</p>
<p>There is a trick to the above mentioned question and you can do that without adding 7's all the time.</p>
<p>the easiest way is to subtract 1 from all the answer choices and find which is the multiple of 7.</p>
<p>for example 78-1= 77 which is a multiple of 7 and therefore it would be a member of the series. I don't remember the correct answer choices but this is a method to do those.</p>
<p>It's an arithmetic series, so it'll be in the form y=mx+b... (GEOMETRIC series would be y=ab^x.)</p>
<p>You find out that m = 7 (it's the constant adder), so plug 7 in for x = 1, then solve for b, and you have your formula.</p>
<p>p.s. did ANYONE get #50??? dammit someone has to have gotten it here- i'm dying over here...</p>
<p>shucks! i guess i misread that question...</p>
<p>I think I answered #50 correctly but I can't recall the question. Was it about an ellipse? As far as I recall in the 2 denominators you had a^2=16 and b^2=16/3, so a=4 and b=4/sqrt(3).</p>
<p>Or it was about sth else? Could you tell me what the quesion was</p>
<p>the sequence answer was 92</p>
<p>a little difficult, but i thought i did alright</p>
<p>victor06: </p>
<p>50 was the one with the f(x/2) = sqrt(f(x) + 1/f(x/4) and you had to find what f(x/4) was or something...(don't remmeber exactly) i remember (c) was .71 (d) was .92 (e) was .98</p>
<p>Was 80 an option on the sequence question? I have no idea what I was thinking, but I believe I answered 80 for that question. Wow.</p>
<p>what is for sure an 800? minus 2? minus 3? minus 4? if you know please tell</p>
<p>wow, i feel really dumb now</p>
<p>"for the marble problem, you don't replace them after you draw them. it's 1/3, and then there's only two left so its 1/2 and then there's only 1 left. "</p>
<p>how do you know, you don't replace them?</p>
<p>You don't replace the balls, it's just common sense.</p>
<p>If you take a marble out, another one cant magically reappear in the bag, sorry.</p>
<p>because if it would be replaced, they SAY that it is replaced. Also, like Brinestorm said, its common sense. By reading the question, you could tell that its not replaced.</p>
<p>wait john tam which sequence answer?? what was the question for the arithmetic problem that added 7 up???</p>
<p>The sequence answer was 92, (C).</p>
<p>Was the real plus imaginary one the point in the second quadrant (C). I didnt know.</p>
<p>The imaginary one had a point along the imaginary (y) axis at 2. Then a point on the real (x) axis at -2. Thus, the two numbers are 0+2i and -2+0i. Add those together and you get -2+2i. It was point A in the 2nd quadrant.</p>
<p>yall are insane. the sequence one was 78. it was the only one that fit, because you started at 1 and added 7 and you never get to 80 or 93.
and the not replacing the marbles - it asked for the ORDER you draw them, so that implies one after the other; you couldn't draw three in order if you were just drawing red, then putting it back and drawing red again.</p>