it says the answer is 29512 but i cant seem to get it. please help
202152
f(x)=(3x^2)-x+10\ng(x)=1-20x\n\n(f°g)=f[g(x)]\n\nSo we have:\n\nf[g(x)]={[3(1-20x)^2]-(1-20x)+10}\n={3[1-40x+(400x^2)]-1+20x+10}\n=3-120x+(1200x^2)-1+20x+10\n=(1200x^2)-100x+12\n\n(f°g)(5) means that we substitue 5 for x.\n\n[(1200x^2)-100x+12](5)\n={[1200(5)^2]-[100(5)]+12}\n=[1200(25)]-500+12\n=30000-488\n=29512
273590
The answer is 20. But i wont tell you how i came up with the answer bcoz i want you to do your homework yourself. Good luck.
22277
4100\n\nbut most people while adding they calculate 90 as 900 and give the result as 5000!!!!
374865
this question isnt right. however, it should be 1710 u^3 if it was right
90979
3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 \nbit more then 20 here :)
480811
10010101\n . -  110101\n----------------\n ..  1100000\n\n\nremember 100-1 = 11
48553
Any answer with B>90 is acceptable satisfying:\nA=2B-180\nand C=180-B-A\n\nfor example: (A,B,C)=(20,60,100) or (40,30,110)\n\nNote that ABC and DBC are similiar.
514130
1275 may be the correct answer but not for that reason. i don't agree with the logic in finding the pattern. i have been trying to find the answer for the last 20 mins and will keep trying to find the answer but i want to know two things:\n\ndoes ab represent just the unknown number or is it a two digit number\n\nand are the numbers correct? \n\none more thing, how was this question written i.e. horizontally, vertically?\n\ncheers\n\nthe differences between each number starting from the bottom is \n4, 8, 200, 330 and the differences between those numbers are 4, 192, 132. so i can't get a guesstimate for you other than it should be around 1000 and probably ends in five.
388177
560 = N / (1- u/ 340) --------------- [1]\n\n480 = N *(1+ u/ 340) --------------- [2]\n\n[2] Divided by [1] gives \n\n480 / 560 = (1 + u/ 340) *(1 - u/ 340)\n\n 0.8571 = 1- (u/ 340) ^2.\n\n(u/ 340) ^2 = 0.1429\n\nu = 128.5 m/s.
638158
7249\n\ntake 0.0659 x 110,000 = answer (7249)
274687
19.47, 180 - 19.47 = 160.53, 180 + (-30) =150, 360 - (-30) = 390 (rejected)\n\nso ans shud be : 19.47, 160.53, 150
276533
Correct.\n\n(1350+99)*1.06
378854
Are you into base system 80? (since you constraint was final 10 digit number.) \nThen it is 80^10.\n\nIf you presume that number 10-80 to be counted as a 2 digit number part of the 10 digit then it gets a bit hairy.
108163
the answer is 96012000\n\nuse the equation \ns= n( 2*a+(n-1)d)/2
453447
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
199459
499849\n\nI found the answer by taking the square root of 500,000.  This was a bit over 707.  When 707 is squared it gives the above answer whose digits happen to add up to 43.  If this wasn't the answer, I could've used trial and error or found a more systematic method.  (For that matter, there may be more answers.)
312019
The answer is obvious.\n\nIt's because ^%&%$&^$&%£%&^*&*  hgvfjhjh ^%776576&*900\nFJHf (*6986ymn kl/h,.\n\nI hope that helps.