Question

1.
The possible outcomes for rolling a pair of fair dice are shown below.


What is the probability of rolling a sum that is a composite number?

Answer 1

do you know what "composite number" means ?

Answer 2

no

Answer 3

lol then you can't do it !

Answer 4

but i will tell you

Answer 5

a composite number is a whole number that can be written as a product of two other whole numbers (not including itself and 1)
another way to say it is a composite number is NOT a prime number

Answer 6

does that help?

Answer 7

i never understood composite and prime numbers no matter how much sombody tried to explain it to me

Answer 8

here is an example
6 is composite because \(6=3\times 2\)
7 in prime, because it only has itself and 1 as a factor

Answer 9

oh so sorta like odd and even?

Answer 10

that is really all there is to it
the only part that might be confusing is that 1 is not prime or composite, and 2 is prime
yeah sort of but even odd only means divisible by 2
9 is composite because \(9=3\times 3\) but it is not even

Answer 11

the numbers you have to consider are
\[\{2,3,4,5,6,7,8,9,10,11,12\}\] can you tell which ones of those are composite and which are prime?

Answer 12

the choices for my question are A:7/12, B:1/2,C:5/12,and D:1/12

Answer 13

i forgot to put those up when i asked the question sorry

Answer 14

i am not interested in choices particularly
more interested in if you know which numbers are composite
then it is only a matter of counting

Answer 15

idk what the answer is tho

Answer 16

let me ask one more time
of the numbers \[\{2,3,4,5,6,7,8,9,10,11,12\}\] which are composite?

Answer 17

that is all you need to know to do this
that, and how to count

Answer 18

well i know how to count lol

Answer 19

the reason im trying to get the answer is cause studyisland closes tomorrow and i need the answer as fast as i can get it and im under alot of pressure i only have 5 more days of school to get my grade up

Answer 20

name the composite numbers, we get the answer in two seconds after you name them
study island? geez

Answer 21

im in seventh grade its alot harder they make us do like 9th grade work

Answer 22

i will show you what do do as soon as you name the composite numbers
if you cannot do that, there is no way you can do this question, might as well forget it

Answer 23

then i guess i might as well forget it then

Answer 24

want to take them one at a time?
i will start
2 is prime
3 is prime
how about 4?

Answer 25

prime?

Answer 26

no \(4=2\times 2\) all even numbers except 2 are composite

Answer 27

how about 5?

Answer 28

composite

Answer 29

no 5 is prime, it has no factors other than 1 and 5

Answer 30

6?

Answer 31

composite

Answer 32

yers!

Answer 33

7?

Answer 34

prime?

Answer 35

yes 8?

Answer 36

composite

Answer 37

yes
9? (we did this one)

Answer 38

composite

Answer 39

whew yes
10?

Answer 40

composite

Answer 41

yes
11

Answer 42

prime

Answer 43

yes
12

Answer 44

composite

Answer 45

ok now we are almost done!!

Answer 46

we list the composite numbers, then count how man times we see them in the table you posted
they are
\[\{4,6,8,9,10,12\}\]

Answer 47

how many 4's inside the table?

Answer 48

3?

Answer 49

yes good
how many 6's?

Answer 50

2

Answer 51

hmm no count again

Answer 52

3

Answer 53

keep counting

Answer 54

oh 4

Answer 55

there are more than 3 sixes in the table

Answer 56

5

Answer 57

there are more than 4
they all lie on a diagonal
right 5

Answer 58

how many 8's

Answer 59

2

Answer 60

hmm no
all the 8's on a diagonal

Answer 61

4

Answer 62

nope

Answer 63

counting was supposed to be the easy part
do you see all five 8's?

Answer 64

igtg my moms taking me to a bon fire but i will be working on this later but thank you for your time and effort and im sorry was any trouble but it was nice talking to u bye

Answer 65

enjoy the bon fire

Answer 66

thx