Question

O={x|x is twice 5}

Answer 1

twice means `2 times`

Answer 2

How can uwrite it in roster form

Answer 3

first, what is twice 5 equal to ?

Answer 4

10

Answer 5

so you can simplify

O={x|x is twice 5}

as

O={x|x is 10}

(but this is still in set builder notation)

Answer 6

Oh? How about{x|x>2but < 10

Answer 7

set builder notation has the rule for the element in the set,

whereas roster notation simply lists the elements

O={10}

Answer 8

for the next one
P = {x|x>2 but < 10}

just list all the x's that are greater than 2 and also less than 10

= { , , , , }

Answer 9

Hmm..what if it imply {x|x = 1

Answer 10

Pls..thelast one

Answer 11

what did you get for the second one?

Answer 12

Hmm..{3,4,5,6,7,8,9}

Answer 13

yeah that's right

Answer 14

what do you think the last one will be ?

Answer 15

For the last i just write {1} is that correct?

Answer 16

yep good work

Answer 17

Oh..than u so much..

Answer 18

you'r welcome