Question

Help pretty plz with math on top lol

Answer 1

Way out of my grade x.x

Answer 2

i think u add all of the colors and find the fraction for her and her friend if i aam right it is out my grade like way out but i tried

Answer 3

Find the probability of selecting a blue pencil first. Then the probability of selecting a red pencil. For the second selection, there's one less in the bag, so the denominator will be decreased by 1.

Multiply the individual probabilities to get the final
\[P(blue~1st,~red~2nd)=\frac{ no.~of ~blue~pencils }{ total~no.~of~pencils } \times \frac{ no.~of~red~pencils }{ total~no.~of~pencils-1}\]

Answer 4

so the denominator is 127 but decreased makes 126 right

Answer 5

original denominator is 24+15+8.

Answer 6

lol my bad 51 but decreased make's it 50

Answer 7

24+15+8=47

Answer 8

ooh sorry put my numbers in the calculator wrong lol so when its decreased makes 46

Answer 9

right

Answer 10

so 24 / 46 simplify right

Answer 11

24/46 will be the probability for the 2nd selection. You don't really have to simplify it because they want a percent.

You still need the probability for the 1st selection. P = blue/original total

Answer 12

Ok im confused so 15/46

Answer 13

15/47

Answer 14

what's happening is she's selecting a blue pencil first when there are 47 pencils in the bag and 15 of them are blue. So the probability is 15/47.

Then she's selecting a red pencil, but now there are only 46 in the bag and 24 of them are red. This probability is 24/46.

To find the probability of doing both, you have to multiply the individual probabilities.

\[P(blue~then~red)=\frac{ 15 }{ 47 }\times \frac{ 24 }{ 46 }\]

Answer 15

ok then i have tha percent ???

Answer 16

yes

Answer 17

thank u hope i got it tho

Answer 18

what did you get?

Answer 19

why did i get 180

Answer 20

I don't know. You should have gotten a decimal. try it this way
\[\frac{ 15*24 }{ 46*47 }\]
Multiply the 15 and 24. Then multiply 46 and 47. Post the fraction you get

Answer 21

180/1081

Answer 22

then just divide that to get the decimal.
Multiply the decimal by 100 to get the percent

Answer 23

ok

Answer 24

thats hard

Answer 25

why i get this long number

Answer 26

because it's a really ugly fraction and the numbers just don't divide nicely.
That's why they said round it to the nearest 10th

Answer 27

Im not that good with stuff like that

Answer 28

what did you get? put the first 4 digits up

Answer 29

0.166

Answer 30

ok. I thought you had taken it to % already