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#252 Re: Help Me ! » help » 2013-03-29 12:22:11

Here :

An aleatory experience consists of turning an arrow on a roulette two times. (3 triangles, 1 circle, and two hexagon)

Question : What is the probability of obtaining exactly one haxagon.

#253 Re: Help Me ! » help » 2013-03-29 12:09:30

i think im gonna re read the problem... im not sure of even understanding what they want ..ty for your help

#254 Re: Help Me ! » help » 2013-03-29 11:54:49

it gives 16/36

but i still don't understand the logic behind it sad  how did you get those numbers ?ty

#255 Re: Help Me ! » help » 2013-03-29 11:47:55

ok...

explain this
oh
ho
oo
hh

#256 Re: Help Me ! » help » 2013-03-29 11:40:05

yes. and what do you mean by simplest ideas ?

#257 Re: Help Me ! » help » 2013-03-29 11:33:57

Could you explain me how you did it ? I get 12/36 and not 16/36....

#258 Help Me ! » help » 2013-03-29 11:24:48

Al-Allo
Replies: 17

hi

If I have the 1 circle, 3 triangles and two hexagons and they're in a bag and pick them two times with return what is the probability of getting exactly one hexagon ?

I get 3/9 but the answer is 4/9....

help pls thanks

#259 Re: Exercises » Algebra -Subject » 2013-03-10 07:28:19

Sorry Bobbym, Ive got other to finish. Il try it on my own, Im feelng that Im lacking knowledge in algebra, maybe I should do a review ^^

#260 Re: Exercises » Algebra -Subject » 2013-03-10 07:24:03

*b   1/a= 1b +2 *b

b/a=+2

#261 Re: Exercises » Algebra -Subject » 2013-03-10 07:19:59

Foget my question, heres my answer b=2a

#262 Re: Exercises » Algebra -Subject » 2013-03-10 07:14:43

Im trying to isolate b on the right of the equation, but must I also distribute the B to the whole right side of the equation ?

*b 1/a=1/b+2 *b (to the 1/b AND to the 2)

which gives :
b/a=2b

?

#263 Re: Exercises » Algebra -Subject » 2013-03-10 07:01:30

Just a question, If I distribute the b on the right, I must also distribute it for 2 ? (Must I distribute to all the right side of the equation ?

1/a=2b ?

#265 Re: Exercises » Algebra -Subject » 2013-03-10 06:43:37

Yes, I guess I'll still keep practicing. thanks

#266 Re: Exercises » Algebra -Subject » 2013-03-10 06:29:26

Okay, Im here. And Bobbym, really haven't you ANY suggestions on how to begin these equations ? I'm feeling that there is no methodology in what Im doing...

#267 Re: Exercises » Algebra -Subject » 2013-03-09 05:51:29

AHHHHHHHHHH... okay that why. Mh bobbym, could we continue later this way of doing ? Because I need to go like now. We shall continue later, when I'm online ? Thanks for your help

#268 Re: Exercises » Algebra -Subject » 2013-03-09 05:44:39

OKay, but isn't it supposed to be 1+1 on the right side ?...

#269 Re: Exercises » Algebra -Subject » 2013-03-09 05:38:11

here is what I did : (like I said, Im not sure how to begin these, to many steps, but the simple ones I can easily do them)

*bu 1/a=1/b+1/u *bu

*a 1/a *bu= 2 *a

bu/2=2a/2

a=bu/2

#270 Re: Exercises » Algebra -Subject » 2013-03-09 05:30:31

is the third one a=ub/2 ??? hope i got it

#271 Re: Exercises » Algebra -Subject » 2013-03-08 16:45:36

Oh man, I don't know why but I'm having trouble with these. I dont know where to begin and always get a different answer >.< And what I meant by article is something that tells how to approach rearranging formulas

#272 Re: Exercises » Algebra -Subject » 2013-03-08 05:23:16

i did the first one

a=s-ut^2

btw, do you have an article on these ? im having a hard time doing these ^^ ty

a(x)a-x/-2=b

b=1/u.a

#273 Re: Exercises » Algebra -Subject » 2013-03-07 10:13:50

That would be great, always looking to practice tongue Anyway, I need to go
!  BYe

#274 Re: Exercises » Algebra -Subject » 2013-03-07 10:08:11

Ok, by curiosity, do you know where I could practice more of these ?

#275 Re: Exercises » Algebra -Subject » 2013-03-07 09:47:20

Oh wow.....It's clear now ! I understand now ^^  thanks. The way you present the formula is more clean, I got misleaded by my mess lol

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