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Mathematics 21 Online
OpenStudy (anonymous):

i need help on a bunch of questions for an assignment will someone plz help me with ALL of them @jgirl128

OpenStudy (anonymous):

where are the questions and what is that, that you dont understand?

OpenStudy (anonymous):

Margo and Carrie are trying to go to Idaho for Dawn's wedding. The probability of finding a flight for less than $400 is 1/7. The probability of Carrie making enough money babysitting to pay for her flight is 3/5. The probability of the girls being able to take time off from work is 1/2. What is the probability that they will make it to their friend's wedding?

OpenStudy (anonymous):

i have 20 min to get 20 other question done

OpenStudy (anonymous):

1/7 * 3/5 * 1/2 is the required answer

OpenStudy (anonymous):

so multiply all those

OpenStudy (anonymous):

ya! But dont blindly take the answer... learn it so you can do those 20 sums in less than 20 mins!

OpenStudy (anonymous):

3/70

OpenStudy (anonymous):

next one Mr. Crosson selects two students from his class to present their reports on Spain. He places the names of each student in a box and picks one at a time. The class has 8 boys and 10 girls. What is the probability that Mr. Crosson will pick two boys in a row if he does not put the first name back in the box? Round your answer to the nearest percent.

OpenStudy (anonymous):

do you want just the answer? dont want to learn?

OpenStudy (anonymous):

the anwser ill study different problems like this one

OpenStudy (anonymous):

56/306 is the answer... simplify it!

OpenStudy (anonymous):

28/153 but i need it in percent

OpenStudy (anonymous):

18 percent

OpenStudy (anonymous):

next one

OpenStudy (anonymous):

All of the following are examples of independent events EXCEPT _____. flipping a coin 4 times playing four games of rock paper scissors two captains choosing teams for a kickball game choosing a one colored marble out of a bag

OpenStudy (anonymous):

what is it?

OpenStudy (jgirl128):

flipping a coin 4 times. but do you understand why it's A?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

i have to in 2 min ill be back in about an hour though will u still be on by then

OpenStudy (jgirl128):

an independent event is basically that one event doesn't affect the outcome of the other event. for example: two events, A and B, are independent. A occurs and it doesn't affect the probability of B.

OpenStudy (jgirl128):

okay, I just want to make sure you understand. users are moderated on this website and I can't simply give the answer, I need to explain it. just wanna make sure you understand.

OpenStudy (jgirl128):

yes, I'll be on.

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