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Mathematics 8 Online
OpenStudy (anonymous):

I need help with question b at http://fotos.fotoflexer.com/ab6708adcc65bedaa788d84fee44ea9c.jpg . Thanks. :)

OpenStudy (anonymous):

Please help me?

OpenStudy (anonymous):

@Kitt020912

OpenStudy (anonymous):

hmm, I think its \[3\over15\] but I'm not exactly possitive.

OpenStudy (anonymous):

Hmm. Could you explain,please?

OpenStudy (anonymous):

uhm. let me read that again.

OpenStudy (anonymous):

how did u get /31?

OpenStudy (anonymous):

I added together all of the numbers and then took the number of reds and put it over that and simply reduced it. But I'm not sure I did it right because of the way that the question was asked. Oh and @zupster 6+8+5+9+2=30 not 25.

OpenStudy (anonymous):

Thanks.

OpenStudy (anonymous):

You're welcome(: idk If I helped or not.

OpenStudy (anonymous):

I think you did:)

OpenStudy (anonymous):

Thank you.

OpenStudy (anonymous):

No problem :D ♥

OpenStudy (anonymous):

:)

OpenStudy (anonymous):

wait, mitt

OpenStudy (anonymous):

i have a question.

OpenStudy (anonymous):

I still need to pee ._. lol

OpenStudy (anonymous):

do you know what it means by 'without replacing the other candy'?

OpenStudy (anonymous):

then, perhaps it's 10 over 30, which would mean that it would be 1/3

OpenStudy (anonymous):

hmmm....

OpenStudy (anonymous):

The probability of selecting red is 9 / 30. The probability of selecting red for second time is 8 / 29.

OpenStudy (anonymous):

So what is the answer?

OpenStudy (anonymous):

8 / 29?

OpenStudy (anonymous):

No.

OpenStudy (anonymous):

Oh.

OpenStudy (anonymous):

Sorry, you're on your own.

OpenStudy (anonymous):

Hmm.

OpenStudy (anonymous):

How is the probability the second time 8/29? you took away two candies didnt you?

OpenStudy (anonymous):

That doesnt seem right..

OpenStudy (anonymous):

No, it is asking what is the probability of selecting 2 red ones.

OpenStudy (anonymous):

On part A i got 1/90

OpenStudy (anonymous):

maybe that has something to do w/it?

OpenStudy (anonymous):

I can doublr check this with a teacher if you want.

OpenStudy (anonymous):

Thats okay. :)

OpenStudy (anonymous):

I'm doing it anyway :P I dont want you to have the wrong answer c:

OpenStudy (anonymous):

Okay.:)

OpenStudy (anonymous):

A) \[\frac{ 2 }{ 30 }=\frac{ 1 }{ 15 } purple\] \[\frac{ 5 }{30}=\frac{ 1 }{ 6 } orange\] \[\frac{ 1 }{ 15 }•\frac{ 1 }{ 6 }=\frac{ 1 }{ 90 }\] Good job(: B) \[\frac{ 1 }{ 15 }•\frac{ 9 }{ 29 }=\frac{ 3 }{ 145 }\] Do you understand? :o

OpenStudy (anonymous):

Thanks, do u simplify?

OpenStudy (anonymous):

@Kitt020912

OpenStudy (anonymous):

It is simplified(:

OpenStudy (anonymous):

oks. i have some more probs tho. tnx for helping me. and tell ur teacher i said thanks:)

OpenStudy (anonymous):

thanks.

OpenStudy (anonymous):

let me post the new q. can i tag u?

OpenStudy (anonymous):

yup(:

OpenStudy (anonymous):

tnx u. :)

OpenStudy (anonymous):

am posting.

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