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Mathematics 16 Online
OpenStudy (anonymous):

Given two sets, X = {things that are impossible or untrue} and Y = {mathematical statements}, which of the following are in X ∩ Y?. A. cow jumps over the moon. B. A cat tells you a story. C. 99 - 2 = 1,000 D. 15^2 = 15 E. Candy is sweet.

OpenStudy (anonymous):

@mary.rojas

OpenStudy (anonymous):

X ∩ Y means all those elements which are contained in both X and Y. Can you identify the mathematical statements here?

OpenStudy (mary.rojas):

LOOK AT THIS! http://openstudy.com/study#/updates/501ad8fce4b02742c0b23469

OpenStudy (anonymous):

@emcrazy14 B?

OpenStudy (anonymous):

B&D??

OpenStudy (anonymous):

No. C and D both are mathematical statements here.

OpenStudy (anonymous):

yeah but Y= mathematical STATEMENTS

OpenStudy (anonymous):

yea aren't they asking for mathematical statements

OpenStudy (anonymous):

Since they are mathematical statements and also untrue, X ∩ Y = C,D

OpenStudy (anonymous):

oops so\rry!!!1

OpenStudy (anonymous):

i have a different options list in front of me!

OpenStudy (anonymous):

i man C&D?

OpenStudy (anonymous):

*mean

OpenStudy (anonymous):

It's okay! :) But you got it, right?

OpenStudy (anonymous):

yea i said C & D..

OpenStudy (anonymous):

thank u. :)

OpenStudy (anonymous):

Yes. C and D are present in set Y as well as set X.

OpenStudy (anonymous):

yw! :)

OpenStudy (anonymous):

i have another question though

OpenStudy (anonymous):

Okay. Post it.

OpenStudy (anonymous):

OpenStudy (anonymous):

I'm sorry. I don't know how to do this. Maybe someone else can help?

OpenStudy (anonymous):

oh :( ok... idk anyone that knows this though

OpenStudy (anonymous):

@mary.rojas

OpenStudy (anonymous):

@ybarrap

OpenStudy (anonymous):

HELP

OpenStudy (mary.rojas):

@mathstudent55 help?

OpenStudy (foreverandalways13):

@Luigi0210

OpenStudy (anonymous):

hopefully there'll be an explanation by then... :(

OpenStudy (ybarrap):

Let P = probability of not winning with a single ticket Then probability of not winning with 2 tickets is P^2 The probability of winning with 2 tickets then is the complement: 1-P^2

OpenStudy (mary.rojas):

@music101

OpenStudy (ybarrap):

P=1-.03

OpenStudy (anonymous):

that's the answer??

OpenStudy (anonymous):

that's not an option though..

OpenStudy (anonymous):

these are the options: A. 0.0726 B. 0.6200 C. 0.0396 D. 0.0591 E. 0.0018

OpenStudy (anonymous):

@ybarrap

OpenStudy (anonymous):

A?

OpenStudy (anonymous):

wait nvm

OpenStudy (ybarrap):

i see the answer in your option list. You just need to calculate 1 - (1-.03)^2

OpenStudy (anonymous):

oh I didn't see the "^2" part

OpenStudy (anonymous):

its D then

OpenStudy (ybarrap):

I'll let you answer that one

OpenStudy (ybarrap):

:)

OpenStudy (anonymous):

ok its D. :)

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