(3x-30)/(x^2-4x) multiplied by 8x/(10-x)
Answer: -24/(x-4)
2006-11-01 03:47:00 · 7 answers · asked by Neil 1 in Science & Mathematics ➔ Mathematics
Absolutely correct!
Original equation:
(3x - 30) / (x² - 4x) multiplied by 8x / (10 - x)
Factor out a common 3 and common x:
3 (x - 10) / x (x - 4) multiplied by 8x / (10 - x)
Now reverse the (x-10) by multiplying by -1:
-3 (10 - x) / x (x - 4) multiplied by 8x / (10 - x)
Now when you multiply across, you can cancel an x and (10 - x):
-3 / (x - 4) multiplied by 8
Now it is simply:
-24 / (x - 4)
So you have the right answer... (you could also write this as 24 / (4-x) )
2006-11-01 03:48:59 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
(3x-30)/(x²-4x) * 8x/(10-x) = (8x)(3x-30) / (x²-4x)(10-x)
= 24x(x-10) / -x(x-4)(x-10)
factor out x and (x-10)
= -24 / (x-4)
Looks good.
2006-11-01 03:58:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
=(-3)*8x / (x^2-4x) = -24x/x(x-24) = -24/(x-4)
so it's correct ;)
2006-11-01 03:55:25 · answer #3 · answered by Farshad Gh 2 · 0⤊ 0⤋
this problem had been asked earlier and answered too
2006-11-01 03:55:39 · answer #4 · answered by grandpa 4 · 0⤊ 0⤋
Yup that answer is right
2006-11-01 03:53:38 · answer #5 · answered by Carter 1 · 0⤊ 0⤋
Hmmm..
Looks good to me.
2006-11-01 03:49:54 · answer #6 · answered by Edward 7 · 0⤊ 0⤋
=) correct!!!
2006-11-01 03:54:56 · answer #7 · answered by *********** 4 · 0⤊ 0⤋