2x-6 5x-15
------- * --------- Does * mean divide?
21 21 Not sure how to type
this. the second 21 belongs under 5x-15
2007-10-11 00:50:52 · 5 answers · asked by Joe T 1 in Science & Mathematics ➔ Mathematics
[02]
(2x-6)/21 divided by (5x-15)/21
=2(x-3)/21 x 21/5(x-3)
=2/5
2007-10-11 00:56:47 · answer #1 · answered by alpha 7 · 2⤊ 0⤋
uhh do you mean that the 21 is an exponent of 5x-15 did you try (2x-6)(5x-15) then distribute it.. 2x times 5x = 10x 2 (this 2 is on top of the x) its kinda hard to explain.. lol. and i don't really know the answer cause i don't get ur question sorry :|
2007-10-11 07:59:51 · answer #2 · answered by Anonymous · 0⤊ 0⤋
I have never seen anyone use an asterisk to denote the symbol for division.
How ever this does not mean that it cannot be used.
You should have a "KEY" an "index" or some form of chart, that will tell you any and all of the uses of symbols. I would suggest you check there and be certain.
(Wiki says it is for a convolution of the two.)
2007-10-11 08:00:00 · answer #3 · answered by Anonymous · 0⤊ 0⤋
* means multiply
so it's
fractions are multplied by multiplying the values above the line and below the line e.g. 1/2 * 1/2 = 1/4 (1*1=1, 2*2=4)
so for you it's
(10x²-30x-30x+90)/441 =
(10x²-60x+90)/441 or written with a line
10x²-60x+90
-----------------
441
2007-10-11 08:04:48 · answer #4 · answered by Martin S 7 · 0⤊ 0⤋
uhm don't get the question but * means multiply
2007-10-11 07:53:19 · answer #5 · answered by kahel na kuhol 3 · 0⤊ 0⤋