algebra word problem?
816671
Let n be the amount of sales (in thousands) of best grade siding.\n\n$40k * 20% = $8k\n$50k * 30% = $15k\nn * 60% = 0.6n\n\nTotal profit will be 8 + 15 + 0.6n\nTotal sales will be 40 + 50 + n\n\nThe profit on the siding should equal 50% of the total sales.\n8 + 15 + 0.60n = 0.50 (40 + 50 + n)\n\nNow solve for n:\n\nSimplifying:\n23 + 0.6n = 45 + 0.5n\n\nSubtract 0.5n from both sides:\n23 + 0.1n = 45\n\nSubtract 23 from both sides:\n0.1n = 22\n\nMultiply both sides by 10:\nn = 220\n\nSo they must sell $220,000 of their 'best grade' siding to make a overall profit of 50%.\n\nHere's a double check:\n$40k * 20% = $8k\n$50k * 30% = $15k\n$220k * 60% = $132k\n\nTotal profit = 8 + 15 + 132 = 155\nTotal sales = 40 + 50 + 220 = 310\n\n155 / 310 = 0.5 = 50%\n\nSo the answer is they must sell $220,000 of best grade siding.
873410
1.  (x + 9)(x - 9)\n2.  (t + 2)(t - 2)\n3.  (b + 12)(b - 12)
1160760
what you have is something like\na(b+c)\n\nthe solution is \nab+ac\n\n(x^3)(2x^-2)+(x^3)(4x)\nnow to multiply x^a * x^b you get x^(a+b)\n\n2x^((3+(-2))+4x^(3+1)\n\n2x+4x^4
836446
Remember the order of operations "Please Excuse My Dear Aunt Sally"?\nParentheses\nExponents\nMultiply\nDivide\nAdd \nSubtract\n\nif n = 2 the plug in the variable  (4 * 2)^2\n\nwork the problem inside the parentheses and square the answer
926616
2x+3<6x-1\n2x-6x<-1-3 \n-4x<-4\nx>1
503153
(x+7)(x+3)\n(x-11)(x+2)\nforget this one.  its AC factoring though\nthis ones AC too
1051508
Your equation would look like x^2-ax+b.  Which means when you solve the equation you would two answers one of which will contain a plus sign other will contain a minus sign since the middle term is negative.  Thus the answer is C.
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
426775
b = 2g - 10\ng = (b + 10)/2
695176
6x^2-3x-4x+2\n3x(2x-1)-2(2x-1)\n(2x-1)(3x-2)
18481
firt you work the problem in the parentheses. that would be (2*-5)+ 4. that would make it -10+4. that equals -6. then you take that and multiply it by -5. that gives you a positive 30
1169010
Find d?\n\nWhere are a, b, and c?\n\nwhy don't you write out the entire problem if you want help?
898860
First one: d= - 1\n\nEDIT: the rest I'm too lazy to do. Do your own homework! =D
1046507
[2x/(x+3)(x-3)]*[(x-3)/4(x)]\ncancelling 2 and x-3 we will get\n=x/(x+3)2(x)\nsimplify we will get\n=x/(2x^2+6x)
554172
Um...\n\n2(-X) + 3(-X) + X + 8\n\n-2X - 3X + X + 8\n\n-5X + X + 8\n\n-4X + 8\n\n8 - 4X
509467
1: x<12\n2: x>257\n3: x>42\n4: x>84\n5: x>25\n6: x>179\n7: x<8\n8: x>577\n9: x<113
771358
3x + 4 < x + 8\n2x < 4\nx < 2\n\n{x | x < 2}