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Mathematics 7 Online
OpenStudy (anonymous):

QUESTION!!!!!! I NEED HELP ASAP!

OpenStudy (anonymous):

I don't what to do at all!

OpenStudy (anonymous):

@agent0smith help???

OpenStudy (anonymous):

I thought it was 1/3 *1/3*1/3

OpenStudy (agent0smith):

Does it say a 1 and a 2 and a 3, or a 1 then a 2 then a 3?

OpenStudy (anonymous):

its says and so I multiply but I don't know what to multiply

OpenStudy (agent0smith):

on the first roll, you can get a 1, 2, or 3, so 3 options, let's say you got a 1 on the second, you only can get a 2 or 3, 2 options, let's say you got a 2 on the third, you can only get a 3, so 1 option You have 6 total outcomes on each roll, so 3/6 * 2/6 * 1/6 =

OpenStudy (anonymous):

.027777?

OpenStudy (agent0smith):

leave it as a fraction. 1/2 * 1/3* 1/6 =

OpenStudy (anonymous):

so 1/36 right?

OpenStudy (anonymous):

dude can you help me with like 4 other questions? I already did 3 of them I just need to know if they are right.

OpenStudy (agent0smith):

uh idk, it's like 12:15 am and i gotta get up in 7 hours

OpenStudy (agent0smith):

Post them quick and i'll look

OpenStudy (agent0smith):

The coin question seems missing some numbers 1,3,5 has to come up on both die, so 3 options each time: 3/6*3/6 = 1/4

OpenStudy (anonymous):

wait the 2,3,5 is for the 2 questions right?

OpenStudy (agent0smith):

The 1st question, i've no idea how many coins or what type they are The 2nd question, 1/4

OpenStudy (anonymous):

they are normal coins and they are 20 coins in total 2 nickels 7 dimes 5 quarters 6 pennies

OpenStudy (agent0smith):

3 coins no pennies: first coin is 14/20 = 7/10 second coin is 13/19 (13 non pennies left, 19 coins left) third coin is 12/18 = 1/3 (12 non pennies left, 18 coins left) Multiply them 7/10 * 13/19 * 1/3 =

OpenStudy (anonymous):

so its 91/570 right?

OpenStudy (agent0smith):

Yes you nerd :P :D

OpenStudy (anonymous):

...

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