Help me answer this: In the 0.45x, what happens to the value of the expressions as the value of x increases?
461076
the value of the expression increases.\n\nUmm don't think so cuz negative numbers are real numbers and a negative number wouldnt make sense.
872873
There is only one value that works: \nx=1\n\nj
1070468
Mutiply $28 by 0.30, then subrtact 28 again, and that should tell you how much it is. ($19.60. It will come up as -19.60 though, just ignore the negative)
1048409
It can be anything.  If you follow the sequence to (x-x) you will get an answer of 0 for the entire equation.
735121
y varies kx\n30 = .... wait a minute this question is impossible to do lol, u need to know two sets of values ( y, x).. either you said the question wrongly or the person who made it is dumb
408980
when playing with < and >\nif you multiply all the equation by -1 the sign < changes to >, and the sign > changes to <\nbut if you just switch the number on the other side the sign doesnt change\nin ur case :\n2x-y < 4 \nequals\n-y < -2x + 4\nif you multiply it with -1 it will become\ny > 2x - 4\n\nlike that. hope it helps :)
809077
I would assume that one of your .01s in column A is something like 0.012.\n\nChange your number  format to General and see what happens.
651778
kevin, the answers given both by howling and JRP seem apparently wrong. Try substituting the value of x they have calculated in the given equation and the equation does not match. Incidentally, Sarah how did you manage to switch the placement of x in your solution from denominator to numerator.Your answer is wrong.\n\nThe equation only balances when it is written like this\n\n(1 2/3)x - 15= 45\n\n(5/3)x = 45+15\n\n(5/3)x = 60\n\nx = (60*3)/5\n\nx= 36.
932758
4.4.........the zeros cancel themselves otherwise the answer would be 8 but because of decimal point locations, its just 4.4.....\n\n\nhow did u come up with the answer?
968535
first-negative 28x\n\nsecond- negative 29.4x
538339
0.3x-15=0.2x-5\nIt's an equality.  As long as you do the same thing to each side, it will remain true, and have the same value for x.\nAdd 15 to both sides, and so simplify the expression:\n0.3x-15+15=0.2x-5+15\n0.3x = 0.2x+10\nNow take 0.2x away from both sides, so that all the terms involving x are one one side only:\n0.3x-0.2x = 0.2x+10-0.2x\nand simplify:\n0.1x = 10\nNow multiply both sides by 10, to give an expression for x:\n0.1x * 10 = 10 * 10\nx = 100\n\nFinally always check by putting the result back into the original equation:\n0.3*100-15=0.2*100-5\n30-15=20-5\n15=15\n☺\nx=100
814311
The issue lies in the fact that the original equation is 0=0.\n\nThen, if you put in any value for x, you are dividing by 0 which as we all know, is a "no no."
926120
your variable is x so you replace that with 8, since x=8     since there are no signs between the 9 and x  in  9x  , that means to multiply them  so that is 72       so your answer is 72 + 5 or 77  , hope that helps
991923
For the first one, 4<-2<6 does become -2>x>-3 (you do have to flip the signs) and yes, it is still an "And" statement, just in reverse (or in other words, -2>x>-3 is the exact same thing as -3<x<-2). For the second one, you don't actually have to multiply by 10, but you should get the same answer either way. I got 0.84<x<1.76.
698011
The error is +/- 0.01.\n\nThe value then is: 6.02 +/- 0.01
734849
x+78 [greater than or equal to] 120\nx [greater than or equal to] 120-78\nx [greater than or equal to] 42
135605
Yahoo's formatting messes this up, but if you cut-and-paste it into Word or Notepad, then use font Courier New it should make more sense.\n\nFirst question\n\n  1      1     11\n---- + ---- = ----\n 3x      2     12\n\n  4       6x     11x\n----- + ----- = -----\n 12x     12x     12x\n\n\n4 + 6x = 11x\n  - 6x = -6x\n-------------\n4      =  5x\n\ndivide both sides by 5\n\n 4\n--- = x = First answer\n 5\n\n\n******\nSecond question\n\n1.5x + 9 =  4.5\n     - 9 = -9.0\n----------------\n1.5x     = -4.5\n\ndivide both sides by '1.5'\n\nx        = (-4.5)/(1.5) = (-3)\n\nx = -3 = Second answer