Ok, another SAT math question?
931279
Let D=days to save 1000.\n\nEach day he gets k=3k/3 and pays out k/3, leaving him with 2k/3.\n\n(2k/3)xD=1000\nD=1000x(3/(2k))=1500/k
1037946
Answer 1: 14 questions answered right, 1 question partially right (there was no mention of not recieving points for partially right answers)\n\nAnswer 2: 22 people (though i think my math is off)
917052
16/24....it's really not that hard...you should be able to solve it on your own.\nps. you might want to simplify it down to 2/3.
1102373
i wont answer.... log onto www.mathguru.com and discover solutions with explanations.
1135408
OH NOES THIS IS LIKE A MATH PROBLEM!!!! i can't handle any more variables :( sry.\n\n\nhahahaha.
880255
I can just give you a link to help you solve it.\n\nhttp://www.ticalc.org/pub/83plus/basic/math/geometry/
249211
Quickest way to solve it- take the first equation and square it, giving you \nx^2+y^2-2xy=25, while the other equation gives you\nx^2+y^2    =15\n\nSo xy = -5 (if that's not immediately obvious, take the difference of the two equations above and solve for xy).\n\nA word of advice on the side: there are certain quadratics that show up all the time on the SAT, such as (x+y)^2, (x-y)^2, and x^2-y^2. It's worth your while to become intimately familiar with these guys, so that you can expand and factor them immediately.
833662
Here is question and answer from the SAT site.
795050
Well I am a little unclear with ur question!...considering the order is not important we can give itin many ways assuming we have to choose only one question(where this would be of 30 pts obviously), we can choose it in 10c1 ways (c = combination, where NcR = [N! / [(N-R)!R! and N! = N * N-1 *....*1] therefore 10c1 = 10 \n \naccordingly we choose 2 questions of these 10 as 10c2 = 45 (assuuming the weightage of questions is insiginficant but their sum =30 pts) \n\naccordingly + 10c3 + 10c4 + 10c5....10c10. which is equal to \n10 + 45 + 120 + 210 + 252 + 210 + 120 + 45 + 10 + 1 = 1023\n\nthere is actually a formula for this too, which is 2^n - 1 where n is the number of questions(like 10 here)
662213
Anyone can give you the answer, but try here next time you need help with conversion or any other kind of math: \n\n\nhttp://www.gateways2learning.com/BasicMath/BasicMath.htm\n\nGood luck..................
703752
simply subtract 7 from both sides. This leave you with\n\nx<_3
302992
2 x 2 = 4\nHe asked for square, not square root.
937830
T=m1*-9.8+m1*a\nT=m2*a--m2*-9.8\n\nset them equal and solve for a\n\ntrust me, i had a test on this today
502657
Try this link and read it all the way through.  It's short.\n\nhttp://mathcentral.uregina.ca/qq/database/QQ.09.00/tom3.html\n\nThis link is better:\n\nhttp://mathforum.org/library/drmath/view/56760.html\n\nJust scroll down.
859744
(x + 4y)(x - 4y)\nI answered 2 of your questions. Do the rest of the questions yourself.
269746
Make 2 7/15 an improper fraction, flip it over to its reciprical and mulitply the two.\n\nBoy...I hope I got that.  *bits fingernails*
343331
What math test do you take?  I'm in Algebra 1 and I only remember 1 question.  It's impossible.\n\nSomeone has a total of 100 coins in dimes and quarters.  The total value adds up to $14.05. How many quarters does she have?\n\nA) 27 (I chose this-it's a dollar off)\nB) 40\nC) 56\nD) 79 (I forget-it's way too high)\n\nWell, that's all I have.  Bye bye!\n\nThanks to the guy who solved that.  I won't get a zero now!