Question

how do i express the set C={x/x+6=10} in roster form

Answer 1

C = { 4 }

Answer 2

I thought the elements would contain more counting numbers?

Answer 3

thats just the answer i got. You could try to investigate my answer more from your own experience with this.

Answer 4

@LauraSmith do you know for what x values x+6 is 10?

Answer 5

Cool...thanks so much for your help - I was really confused with this one. Sorry to bug, but how did you arrive at that answer?

Answer 6

in other words how do you solve x+6=10

Answer 7

what is the solution to x+6 = 10

Answer 8

@ Freckles...Im not really sure sorry. I was hoping it could be explained somehow?

Answer 9

4

Answer 10

correct

Answer 11

that means that

C = {x | x+6 = 10}

is really the same as

C = { 4 }

Answer 12

That's what I was assuming the answer was, but am not sure how to write that in roster form

Answer 13

:) awesome

Answer 14

its already in roaster form, there is only one element in this set because there is only one solution to x+6 = 10

Answer 15

aha...that's what I was looking for...that explains it all...Thanks so much :)

Answer 16

np :D

Answer 17

Fedorable...

Answer 18

Would you be able to help out with just one more problem - last one

Answer 19

C ={ X XEN and 7 ≤ X ≤ 14 }

Answer 20

is that the set C when
\[x \in N \] and
7 ≤ X ≤ 14 ?

Answer 21

yes

Answer 22

so x is in the set of natural numbers. That inequality is from 7 to 14, so I'm thinking that all the elements from 7 to 14 which is in the interval count as long as it's a natural number. like 8 is a natural number and it's between 7 and 14

Answer 23

Great, so in other words...it should be C= {7,8,9,10,11,12,13,14}

Answer 24

yeah

Answer 25

Great, thanks! that's why I was confused with my previous question

Answer 26

I thought it was more to it...thats all

Answer 27

oh, sorry i couldn't get to you lol

Answer 28

No...you were very helpful and I think I was delayed with understanding, sorry

Answer 29

what the question is asking is just the set of natural numbers that's between 7 and 14
x in N means x is in natural numbers...
natural numbers like 1 2 3 4 5 6.... <--- but we can't write that because it's all less than 7
though watch out some books have 0 counted as a natural number.

Answer 30

Yes, I was told to ignore 0

Answer 31

and also fractions

Answer 32

I meant the elements in the set of natural numbers that's between 7 and 14. there. This appears in discrete math and some other math subjects
yeah 0 doesn't count and for natural numbers it's positive whole numbers.

Answer 33

hence they are not counting or natural

Answer 34

the set of integers has negatives

Answer 35

agreed!

Answer 36

speaking of which, I just solved for one :)

Answer 37

what math class are you in? just wondering. I've seen this in Discrete Math last semester

Answer 38

I have Finite Mathematics...it's pretty easy but confusing at times

Answer 39

oh...

Answer 40

Finite Mathematics and Linear Modeling

Answer 41

hmm interesting...

Answer 42

UsukiDoll

Answer 43

Do you agree with the answer received for the first problem?

Answer 44

yes

Answer 45

Please post (or bring up) only one question at a time, please. This might bring you faster responses from those who might be able to help you.