usually means times a number in algebra example: if x equals 4 then what is 4x? the answer is 16 because it means 4 times 4
40x=280 x=7
x equals 9
For x-2x= 3x-43x+1 x-2x= -x and 3x-43x+1 = -40x+1 so -x= -40x+1 subtract -x from both sides 0= -39x +1 -1 = -39x so 1=39x so x=1/39
To simplify the expression (2x \cdot 20 - 2(x - 2)), first calculate (2x \cdot 20) which equals (40x). Next, simplify (2(x - 2)) to get (2x - 4). Therefore, the expression becomes (40x - (2x - 4)), which simplifies to (40x - 2x + 4). Finally, combining the terms gives you (38x + 4).
X3 + 13X2 + 40X factor out an X X(X2 + 13X + 40) factor the quadratic expression, what two factors of 40 add up to 13? X(X + 8)(X + 5) works the same if that is a negative in front of X3, just sign changes
40x=280 x=7
If you mean: 4xsquared+40x+100 then divide all terms by 4 which then factors to (x+5)(x+5)
(x - 20)(x - 20)
40x=360 div both sides by 40 x=9
2 * 2 * 3 * x = 12x2 * 2 * 2 * 5 * x * x = 40x^2Select the common factors.2 * 2 * x = 4x, the GCF
35 + 40x + 5x2 = 5(7 + 8x + x2) = 5(7 + x)(1 + x)
x equals 9
x(x + 8)(x + 5)
TC=x^2-40x=405
To find the number that 12 is 40% of, you can set up a proportion. Let x represent the unknown number. The proportion would be: 12/x = 40/100. Cross multiplying gives you: 12 * 100 = 40x. Simplifying further, you get: 1200 = 40x. Dividing both sides by 40 gives you x = 30. Therefore, 12 is 40% of 30.
26/40 = x/100 cross multiply 40x=2600 x= 65%
For x-2x= 3x-43x+1 x-2x= -x and 3x-43x+1 = -40x+1 so -x= -40x+1 subtract -x from both sides 0= -39x +1 -1 = -39x so 1=39x so x=1/39