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Geometry 13 Online
OpenStudy (anonymous):

There are 8 students in a classroom, including the triplets Molly, Polly, and Dolly. If 3 of the 8 are randomly selected to give speeches, what is the probability that Molly will be first, Polly will be second, and Dolly will be third? A. B. C. D.

OpenStudy (anonymous):

please explain how to do it

OpenStudy (benlindquist):

Step 1: Change the given percentage to a decimal. In our example: 76% = 0.76. Step 2:. Multiply the decimal found in step 1 by itself. Repeat for as many times as you are asked to choose an item. For example, if you were to pick 3 items at random, multiply 0.76 by itself 3 times: 0.76 x 0.76 x 0.76 = .4389 (rounded to 4 decimal places). That’s how to find the probability of a random event!

OpenStudy (anonymous):

looks like you over thought this

OpenStudy (benlindquist):

eh

OpenStudy (anonymous):

D?

OpenStudy (benlindquist):

yea there are only 3

OpenStudy (anonymous):

aye i think i get it

OpenStudy (benlindquist):

i though

OpenStudy (anonymous):

A band leader randomly selects 2 students out of 80 band members. If you and your brother are both band members, what is the probability that you are both selected? A. B. C. D.

OpenStudy (anonymous):

1/6320 1/3160 1/1600 1/20

OpenStudy (anonymous):

@benlindquist can i get help with another one please

OpenStudy (benlindquist):

Check over the list i sent you first

OpenStudy (anonymous):

i did 0.80 times 2

OpenStudy (anonymous):

what am i supposed to do?

OpenStudy (anonymous):

i think its C

OpenStudy (benlindquist):

im not great at these. ill look over

OpenStudy (anonymous):

D.

OpenStudy (anonymous):

how do u know?

OpenStudy (benlindquist):

c might be the right answer. Might be

OpenStudy (anonymous):

im gonna go wit C

OpenStudy (anonymous):

unless ethan can explain

OpenStudy (benlindquist):

ok, i think it is your best answer

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