An SAT math question!?
916987
Here's the explanation you seek.\n\nThe average age of the group equals the sum of the ages, divided by the number of people in the group, and the answer is 16:\n\nSum / People = Average = 16\n\nNow, when one of the people is replaced by someone 12 years older, the Sum is increased by 12, People (the number in the group) is unchanged, and the answer is now 18:\n\n(Sum + 12) / People = 18\n\nIf you subtract the first equation from the second equation, you get:\n\n12 / People = 18 - 16 = 2\n\nSo 12 / People = 2. \nTherefore, People must be 6, because 12 / 6 = 2.\n\nIf you want the algebra to be easier to follow, try this (using S for Sum, and P for People):\n\nS / P = 16               so S = 16 P\n(S + 12) / P = 18    so S + 12 = 18 P\nSubtracting the first equation from the second:\n12 = 2 P\nDividing both sides of the equation by 2: \n6 = P\nSo there are 6 people in the group.
661659
(0! + 0! + 0! + 0!)!\n=(1+1+1+1)!\n=(4)!\n=24
154380
I posted these sources earlier to someone else who was looking for math help.\n\nGood Luck!!
703752
simply subtract 7 from both sides. This leave you with\n\nx<_3
903533
ignore the decimals when u originally do the problem, then however many deciams there are in both of the decimals you're multiplying is how many there will b in the answer. i.e. if you multiply 6.78x4.234 together the answer will have 5 numbers behidnthe dceimal point
1169010
Find d?\n\nWhere are a, b, and c?\n\nwhy don't you write out the entire problem if you want help?
1007654
Is this your homework???  The answer is B, anyway.
800717
(1) First one is copied wrongly by you                                            (2) Where is the equal to sign?                                                        (3)This equn. also cannot be solved                                              (4)-p/16+5=9  Multiplying all the terms by 16 ,we get -p+80=144   =>-p=144-80=66 Therefore p=66 YOU SHOULD BE MORE CAREFUL BEFORE SENDING YOUR PROBLEMS TO YAHOO ANSWERS.HOWEVER,YOU MAY SEND THE CORRECTED VERSION OF THE PROBLEMS TO ME IMMEDIATELY THROUGH YAHOO ANSWERS.
831094
36. >\n38. =\n40. >\n42. <\n44. <
833662
Here is question and answer from the SAT site.
748483
The answer is 119\n\nTake 2 at a time end up with 1 (59 times=118 one left)\nTake 3 at a time end up with 2 (39 times=117 two left)\nTake 4 at a time end up with 3 (29times =116 three left)\nTake 5 at a time end up with 4 (23times=115 four left) \nTake 6 at a time end up with 5 (19times=114 five left)\nTake 7 at a time end up with 0 (17times=119 o left)\n\nI am dead sure this time = ]\n\nThe trick is look at 5 at a time. there is 4 left this means the last digit must be 9. So look at all possible answer of 7s that ends with 9 and work it out from that!!!!!!!!!!
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.
959479
all you need to do is go to www.webmath.com, it'll help u there!\n\nI always do my math problems to that site if ever i get stuck on something! It's helpful!
849743
This is the third time that this question has been asked!?!?!\n\nIt's a tough one, too.\n\nI'm taking it to work with me and asking my colleges to help me out on it.\n\nBut someone "did" crack this CHALLENGE Question.\n\nSo here's the answer. . .\n\nhttp://answers.yahoo.com/question/index;_ylt=AvnsMpyNhtwrHV1JVMvXrE4jzKIX?qid=20061130045858AAB57A7\n\nANSWER:  ABCDEFGHJ = 25,693,148\n\nA=2\nB=5 \nC=6\nD=9\nE=7\nF=3\nG=1\nH=4\nJ=8
855176
Hold up eight fingers.  Now put down three of them.  That leaves five of them.\n\nThe answer is 5.\n\nIt is also equivalent to the number of points you lost asking this question... but I guess you are just having fun with Yahoo! Answers coming up with silly questions, aren't you.  Enjoy!
833237
so far, so good\n\nn!/(n-4)! = 56 [n!/(n-2)!] \n\nmultiply both sides by (n-2)!/n!\n\n[n!(n-2)!] / [n!(n-4)!] = 56\n\n(n-2)! / (n-4)! = 56\n\n(n-2)(n-3) = 56\n\nYou could multiply this out and solve the quadratic, in which case you will get one positive and one negative root, or if you remember that 56 = 8*7, then that quickly leads to n = 10
914435
x > 5\n\n- - - - - -s-