If xy=6, yz= 9, and zx= 24, then what is the value of xyz??\nPLEASE EXPLAIN!
218065
Firstly, we have to multiply all of the eqautions together.\n\nxy*yz*zx \n\n= 6*9*24 \n\n= (xyz)^2 \n\n= 1296\n\nNext step is to find the square root. (Let V = square root)\n\nV1296\n\n= 36\n\n= xyz
334945
of course x=640, y=384 and x=7290, y=4374 will also work (these are multiples of the answer you give). \nI feel x=8954 and y=5687 will also work.
650111
You don't give a feasible region. However, only one of your answers actually satisfies z=6x+10y. That should solve your problem.
380043
Oh why you asked same question 2 times ???? \nAny way, the answer is what i explained for you earlier\n\nX = 2∏ + ∏/6 , x = 4∏ + ∏/6 , …., x = 2k∏ + ∏/6 , ( k Є Z) \nX = 2∏ + 5∏/6 , x = 4∏ + 5∏/6 ,….., x = 2k∏ + 5∏/6 , ( k Є Z)\n\n\nGood Luck
578747
(x=3;  y=0; z=3)\n1 1 1 = 6    (a)\n2 2 3 = 15  (b)\n2 3 4 = 18  (c)\n\n 1 step do: (a)x(-2)--->(b) and then (a)x(-2)--->(c), you get\n\n1 1 1 = 6 (a')\n0 0 1 = 3 (b')   that mean z = 3\n0 1 2 = 6 (c')\n\n2 step : (b')x(-2)----> (c')  you get\n\n1 1 1 = 6\n0 0 1 =3\n0 1 0 =0     that mean y=0\n\n3 step : you can find X=????????
153865
x + y + z = t\n\nx +x% + y + y% + z + z% =\n[(100 + 1)( x + y + z)]% =\n101t% = t + t%. So\nx +x% + y + y% + z + z% = = t + t% or\nx% + y% + z% = t%
328954
(1) { -2x-y-z=0\n(2) { -x-2y-z=0\n(3) { -x-y-2z=0\n\nLet's look at (2):\n-x-2y-z=0 => x=-2y-z\nNow at (3):\n-x-y-2z=0 => x=-y-2z\nNow we can see that\n-2y-z=-y-2z => *** y=z ***\n\nNow let's put these values into (1):\n-2x-y-z=0 => -2x-y-y=0 => -2x-2y=0 => 2x=-2y => *** x=-y ***\n\nFor now, we know that x=-y=-z\nLet's put all of what we know into (2), and express everything using 'x':\n-x-2y-z=0 => -x-(-2x)-(-x)=0 => -x+2x+x=0 => 2x=0 => *** x=0 ***\n\nThus, x=0 => y=-0=0 => z=0\nSo the only solution is (0,0,0).\n\nGood luck!
433455
z-2d=1/2yx^2\n2(z-2d)=yx^2\nx^2=(2/y)(z-2d)\nx=+/-rt[(2/y)(z-2d)]
177058
if x = 1 then\n\n3 - 12 x 3 + 4 - 4 = 27\n\nbasically depends on what is x??\n\nor suppose it goes like this?\n\n9 - 24 x 6 + 4x - 4 = still need to know what x is...\n\nif x = 1 then the answer is -90\n\nYou really must clarify what x is...thanks!!!
52549
You are solving for k so it you need to rewrite the problem to look like this k=z/(xy) where x=3, y=8, z=6 substitute the letters for numbers so k=6/(3*8) k=6/24 or k=1/4 to check just solve for any other letter such as z by using what you know of k and you should come out with z=6
394479
You did everything correct.  If you eliminate the x, you also eliminate the y.  The resulting equation is not ?=-9, it is 0=-9.  Since this is an untrue statement, there is no answer to the problem.  Both equations represent lines that are parallel to each other and will never touch.
107711
x+y=3\n\nput value of y\n\nx+ x-1=3\n2x=4\nx=2\n\nu got the answer\n\nx=2\ny=x-1\ny=1\n\n...............
523810
ok let's make it like this\n\n4x+2y=5 ...(i)\n13x-3y=2... (ii)\n\nnow we are multiplying (i) with 3 and (ii) with 2 and we get\n12x+6y=15 .. (i)\n26x-6y=4 .. (ii)\n\nnow adding (i) and (ii) we get\n\n38x = 19\nso x = 0.5\n\nnow putting this value of 'x; in (i) we get\n2 + 2y= 5\nor 2y = 3\nor y =3/2 = 1.5\n\nthus we get two values\n\nx=0.5\ny=1.5 \n\nand that is the answer
27386
I think the answer is x=1/2.\n\nIf x and y vary inversely, then xy = k, which is some fixed number. Taking the first two values, (3)(14)=k, so k=42.\n\nIf y=84, and k=42, then (84*x)=42, or x = 0.5
480939
Y = 7 X\nX + Y = 72 = 8 X\n\nX = 9\nY = 63
345366
Rearranging equation 2:  x = y + z + 1\n\nSubstitute this in for x in each of the other two equations:\n\ny + z + 1 + y + z = 1   simplifies to  y + z = 0\n\n2y + 2z + 2 + 2y - z = -4  simplifies to 4y + z = -6\n\nSubtracting these simplified equations gives 3y = -6\n\ntherefore y = -2\n\nNow substitute this into y + z = 0, giving z = 2\n\nNow substitute these values of y and z into x = y + z + 1, to get x = 1\n\nSo the solution is:\n\nx = 1\ny = -2\nz = 2
425241
If x is 2, then 8x is 16.\n\nIf y is 3, then 4y is 12.\n\n16-12 is 4.  :o)