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Mathematics 6 Online
OpenStudy (anonymous):

help????

OpenStudy (anonymous):

Find the experimental probability. Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black? A.2/5 B.3/5 C.2/3 D.3/7

OpenStudy (anonymous):

@snazzychazzy @mathstudent55

OpenStudy (misty1212):

HI!!

OpenStudy (anonymous):

hello can you help me understand this plaese

OpenStudy (misty1212):

50 draws, 30 black marbles

OpenStudy (misty1212):

the ratio is \(\frac{30}{50}\) which reduces

OpenStudy (misty1212):

and no, it is not C

OpenStudy (anonymous):

nvm then

OpenStudy (anonymous):

and the simplify it

OpenStudy (misty1212):

BEWARE of answers with no explanation they are often wrong

OpenStudy (anonymous):

*and then

OpenStudy (anonymous):

B then

OpenStudy (anonymous):

sorry snazzy i like to figure it out

OpenStudy (anonymous):

30 divide by 50 equals 0.6 switch that to a fraction is 6/10 and simplify it to 3/5

OpenStudy (anonymous):

But that is ur answer :)

OpenStudy (anonymous):

thank you :3

OpenStudy (anonymous):

No problem :)

OpenStudy (anonymous):

And thank u for the medal working on getting human calculator :)

OpenStudy (anonymous):

i have 46 medals :D

OpenStudy (anonymous):

your welcome

OpenStudy (anonymous):

can you help me on 4 more please

OpenStudy (anonymous):

sure i will gladly help

OpenStudy (anonymous):

Also post a new question if ur are finished with this question

OpenStudy (anonymous):

Brahim completed 18 free throws and missed 12. Using experimental probability, how many free throws is he predicted to complete in the next 100 tries? A. 6 B. 36 C. 48 D. 60

OpenStudy (anonymous):

i think it is 60

OpenStudy (anonymous):

I see ur reason but i will see if u are correct

OpenStudy (anonymous):

well first cross out A because if the free throws increases they baskets he makes increases as well

OpenStudy (anonymous):

true

OpenStudy (anonymous):

i am thinking B for a reason of that 100/18 equals 6 (rounded) but if u do 6*6 since 6 was the number of baskets he made before times it by how many he is doing know i believe it will be 36 :)

OpenStudy (anonymous):

ok i will try it and at the end of this quiz i will tell you

OpenStudy (anonymous):

Ok

OpenStudy (anonymous):

The table shows the results of a spinner with four colored sections. Use the table to answer the question. The spinner is spun 50 more times. Which is the best prediction for the number of times the spinner will stop on white? A. 5 B. 10 C. 25 D. 40

OpenStudy (anonymous):

@snazzychazzy

OpenStudy (anonymous):

i know i is here

OpenStudy (anonymous):

But i am not sure about this since i dont know how many times it was spun the first time :/

OpenStudy (anonymous):

I would go with C because you know that their is a big white space on that spinner from the table earlier so you know that white will be the most landed on then any other color :)

OpenStudy (anonymous):

sorry @snazzychazzy i had to go eat lunch. You still there??????

OpenStudy (anonymous):

yesh

OpenStudy (anonymous):

I AM LVL 61 YESH YESH YESH

OpenStudy (anonymous):

AWESOME!!!!!!

OpenStudy (anonymous):

i feel so amazing right now

OpenStudy (anonymous):

lol i bet

OpenStudy (anonymous):

i need two more medals D:

OpenStudy (anonymous):

so are you for sure its c

OpenStudy (anonymous):

lol if i can give you more medals i would

OpenStudy (anonymous):

Yes also because you can tell that the white is going to get the most but so will other colors but i wont get so many times to 40 so the other answers would be to low so i think it is C

OpenStudy (anonymous):

what i am trying to say is it wont get so low and it wont get to high to the best estimate (also the only answers) would be 25

OpenStudy (anonymous):

ok thank you

OpenStudy (anonymous):

No problem :)

OpenStudy (anonymous):

\(\Huge\color{purple}{UR~WELCOME}\)

OpenStudy (anonymous):

lol

OpenStudy (anonymous):

The table shows the results of drawing letter tiles from a bag. What is the probability that the next tile drawn will have the letter C on it? http://static.k12.com/calms_media/media/1416500_1417000/1416595/1/5ed9dcef8dd7dcfdb451e19005fb94db10bbcd87/FGA_130913_160911.jpg

OpenStudy (anonymous):

Is this a fill in da blank or multiple choice??

OpenStudy (anonymous):

no i just have to type in the fractions

OpenStudy (anonymous):

Ok

OpenStudy (anonymous):

a.1/18 b.6/25 c.9/25 d.18/25

OpenStudy (anonymous):

C so what your gonna do is take all those numbers and plus them and then take 18/50 and take it and make it a 9/25 :)

OpenStudy (anonymous):

and this i am 1000000000000000000000000000000000% sure

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

\(\Huge\mathbb{Any~More?}\)

OpenStudy (anonymous):

A bag contains 45 marbles of various colors. Lena draws 48 times, each time replacing the marble before drawing again. She gets a total of 16 red marbles. Which is best prediction of how many red marbles are in the bag? A. 3 B. 13 C. 15 D. 16

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

A what i did was took 48 and divided it by 16 to get three

OpenStudy (anonymous):

man your awesome

OpenStudy (anonymous):

and i got a 60 on my test

OpenStudy (anonymous):

Oh no

OpenStudy (anonymous):

wait are u on k12??

OpenStudy (anonymous):

but which ones did u miss?

OpenStudy (anonymous):

#2 #5

OpenStudy (anonymous):

last one and second :(

OpenStudy (anonymous):

what were the answers??

OpenStudy (anonymous):

#2 60

OpenStudy (anonymous):

Oh u had that right :(

OpenStudy (anonymous):

#5 15

OpenStudy (anonymous):

it ok i can take it 2 more times

OpenStudy (anonymous):

:)

OpenStudy (anonymous):

you ready :D

OpenStudy (anonymous):

you probably post a new question

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

So that way if anyone has different ideas about it they can help too

OpenStudy (anonymous):

yup and lets get started

OpenStudy (anonymous):

Find the experimental probability. Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black? A. B. C. D.

OpenStudy (anonymous):

o ooops

OpenStudy (anonymous):

a.2/5 b.3/5 c.2/3 d.3/7

OpenStudy (anonymous):

WAIT THE ANSWERS ARE THE SAME I THINK LOOK AT THE FIRST QUESTION

OpenStudy (anonymous):

Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black? A.2/5 B.3/5 C.2/3 D.3/7

OpenStudy (anonymous):

yesh they are

OpenStudy (anonymous):

o they shoud not be

OpenStudy (anonymous):

hold on

OpenStudy (anonymous):

ahh they are wooooow that never happen befor

OpenStudy (anonymous):

well ok awesome :3

OpenStudy (anonymous):

that should be awesome for u

OpenStudy (anonymous):

lol i think this next one is different

OpenStudy (anonymous):

Three out of 200 machine parts were found to be defective. About how many parts would be expected to be defective out of 2500 parts? A. 15 B. 30 C. 38 D. 67

OpenStudy (anonymous):

yup different

OpenStudy (anonymous):

yeah its different

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