Question

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

Answer 1

what is the solution to x+6 = 10

Answer 2

it has to be in roster form

Answer 3

yes I know, but what is the solution to x+6 = 10

Answer 4

not sure i forgot

Answer 5

x is some number

x+6 = 10

is like saying "some number plus 6 equals 10"

Answer 6

what goes in place of "some number"

Answer 7

would it be 4?

Answer 8

correct

Answer 9

so x = 4

Answer 10

that means that

C = {x | x+6 = 10}

is really the same as

C = { 4 }

Answer 11

oh ok so how wold i write that in roster form

Answer 12

it's already in roster form

Answer 13

C = { 4 } is in roster form

Answer 14

there is only one element in this set because there is only one solution to x+6 = 10

Answer 15

so would it be {1,2,3,4,510} or no

Answer 16

yes something like that...BUT...the numbers: 1, 2, 3, 5, 10 do NOT satisfy x+6 =10

only 4 does

Answer 17

that's why the answer is simply { 4 }

Answer 18

that's what C = {x | x+6 = 10} means

C = {x | x+6 = 10} means "the set of all numbers x such that x+6 = 10"

only x = 4 fits this requirement, so that's why the answer is C = { 4 }

Answer 19

oh i get it thank you :)

Answer 20

that's great, I'm glad it's clicking

you're welcome

Answer 21

well kinda it is

Answer 22

which part isn't making sense?

Answer 23

all of it like the homework im doing

Answer 24

oh the other problems you mean?

Answer 25

yes sorry thats what i mean

Answer 26

that's ok, do what you can and ask any questions you have by posting a new question off to the left

Answer 27

ok