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Mathematics 23 Online
OpenStudy (anonymous):

PLEASE HELP! I will give a medal :) In a city school, 70% of students have math class, 65% have science class, and 45% have math and science class this semester. What is the probability (rounded to the nearest whole percent) that a randomly selected student will have science class this semester, given that the student is in math class? 93% 20% 69% 64%

OpenStudy (anonymous):

Do you know how to start it off?

OpenStudy (anonymous):

I know how to solve it, but I am just not sure how to set the equation up

OpenStudy (anonymous):

@lovingod786

OpenStudy (anonymous):

Ok can you just walk me thru or show what you do to solve it?

OpenStudy (anonymous):

Wait, are you trying to help me? Or are you the one needing the help?

OpenStudy (anonymous):

I need help

OpenStudy (anonymous):

I asked the question. I am the one that needs help. Sorry

OpenStudy (anonymous):

let me read the qeustion ill help

OpenStudy (anonymous):

Ok thank you! @dabest21

OpenStudy (anonymous):

no problem

OpenStudy (anonymous):

Oh wait I'm sorry haha...I thought this was my problem

OpenStudy (anonymous):

But yeah show me what you did to solve it?

OpenStudy (anonymous):

first make a chart |dw:1453129035016:dw| i dropped the percentage signs to make it easier to understand the 180 is the total 180=100%

OpenStudy (anonymous):

do u see how i made this @Snufflebug02

OpenStudy (anonymous):

Okay yes I understand

OpenStudy (anonymous):

so we r looking for a person who will have science and math what number percent is that

OpenStudy (anonymous):

45

OpenStudy (anonymous):

and the total is 180 so 45/180=?

OpenStudy (anonymous):

0.25

OpenStudy (anonymous):

wit a secd real quick

OpenStudy (anonymous):

i started wrong

OpenStudy (anonymous):

Okay

OpenStudy (anonymous):

r u sure thats the right question

OpenStudy (anonymous):

What do you mean?

OpenStudy (anonymous):

it would make more sense if the 65 was 55

OpenStudy (anonymous):

It's right. If you are not able to solve it, it's ok.

OpenStudy (anonymous):

ill figure it out

OpenStudy (anonymous):

Okay

OpenStudy (anonymous):

ok so 7/10*6.5/10=?

OpenStudy (anonymous):

0.455

OpenStudy (anonymous):

good so that s about .45

OpenStudy (anonymous):

@DaBest21 When you are done here can you help me with my problem?? I already tagged u

OpenStudy (anonymous):

ok i think ive got it

OpenStudy (anonymous):

That's not a choice

OpenStudy (anonymous):

a=70 b=65 and c=45

OpenStudy (anonymous):

do (b/a)

OpenStudy (anonymous):

do (.65/.7)

OpenStudy (anonymous):

r uthere @Snufflebug02

OpenStudy (anonymous):

message me when ur back

OpenStudy (anonymous):

I got 0.92

OpenStudy (anonymous):

actually .928 which rounds to .93 or 93%

OpenStudy (anonymous):

Ok thanks!

OpenStudy (anonymous):

If you need anymore help message me. Plus, don't forget to medal and fan.

OpenStudy (anonymous):

I will :)

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