can someone help me i forgot how to do this. math is hard
127654
4x^3y^2-16y^3-9y=\ny(4x^3y-16y^2-9)
544984
OK, I'll bite.  My calculation is:\n\n(64 * 14 * 42 * 41 / 4) + (64 * 49 * 36 * 35 / 4) = 1373568\n\nIf anyone else gets that, I must be right...
235659
Start by multiplying both sides by D this gives you\n(D*P) = (2*s*t)\n\nthe divide both sides by 2t which gives you\n(D*P)/(2*t) = s\n\nor\n\ns = (D*P)/(2*t)
334046
u should write it like\n7.52*10^-4
509402
It is 32. Yeah grandma!!!! What you did wrong was you divided by 2 not multiplied. To get n by itself you need to multiply each side by 2 not divide. Its alright I did the same thing in Middle School\n\n16=n/2\n2/1 * 16=n/2 *2/1\n32=n
671329
Rewrite the words into math symbols:\n\nThe sum of two numbers is 33:\nx + y =33\n\nTheir difference is 9:\nx - y = 9\n\nYou now have:\nx + y = 33 \nx  - y =   9\n\nA way to solve is to add the two equations to each other:\n\n(x+x) + (y-y) = 42\n2x  + 0 = 42\n\nx = 21\n\nPlug 21 in for x in the first equation to get y:\n(21)  + y = 33\n\ny = 12\nx = 21
24167
try to follow\n\nx/2-10=a\na/2-4=b\nb/2-2=6\n\nsolve and substitue\nb=16\na=40\nx=100 --the original amount\n\nhope that helped
62904
You should've searched Google...\n\n 2 + 2 = 4
526816
Multiply them\n1*3*2 = 6\nAnswer: 6 possibilities
482020
You need to give some directions.  What is the problem asking you to do?\nNote: The person below is incorrect.  (4+3x)^5 does NOT equal\n4^5 + (3x)^5
391600
(-x/4+ 5/6) * 12 < (4x/3 +2) * 12 (mulitply both sides by 12)\n\n-3x +10 < 16x + 24\n\n-3x-16x +10-10 < 16x-16x + 24-10 (move all variables and numbers to one side)\n\n-19x< 14 (divide both sides by 19)\n\nx < -14/19\n\n* means times\n\n(-n/5 + 6) * 5 > n *5 (multiply both sides by 5)\n\n-n + 30 > 5n\n\n-n + n +30 > 5n +n (move all varialbes to one side)\n\n30 > 6n (divide both sides by 6)\n\n5>n
93326
You've just got to do the cross-multiply trick.  Sooo...\n4(x-2)=24 -> 4x-8=24 -> 4x=32 -> x=8
368733
add 4, divide by 4\nadd 3, divide by 3\nadd 2, divide by 2\nthe answer is 3
646574
(2x-9)(2x+9)\n\na guess... its been a long time since I did that stuff
192286
Its tricky work, i need digrams to explain to you so your better just following this link, I think it will help you out.
347405
Here is how you do it:\n(2,1) and (3,4) = [(2)(3) + (1)(4)]/(2)(1) - (3)(4)\n                        = (6 + 4)/(2-12)\n                        = 10/-10\n                        = -1\n\nTada
482116
Divide 840 by the answer from this equation (0.08 - 1), then you can solve for "y".\n\nGood luck!