Question

=

Answer 1

A ∩ B=Ø , B ∩ C ={x | x = 5}

Answer 2

Yah I was really confused :(

Answer 3

\[A \cup B=\]{x | x < 1 or x ≥ 5}

Answer 4

@phi

Answer 5

I know this is a multi-part question. If you could even help me do the first one, I would probably be able to figure out how to do the rest :)

Answer 6

must gave you most of the answers.

Answer 7

I know, but I want to know how to do it, not just the answers

Answer 8

First, memorize U means union, which means OR
\( \cap\) means intersection and means AND (at the same time)

Answer 9

A U B
we look at A and B:
x < 1 U x ≥ 5

change the U to OR
x < 1 or x≥ 5
look for that choice

Answer 10

The second one on the right! :)

Answer 11

now do
A U C
copy A and C
x < 1 U x = 5

what is U? Union = OR
put in or:

x < 1 or x=5

Answer 12

I think U = union?

Answer 13

yes U means union, which translates into "or" for these problems

Answer 14

Oh! And that's the fourth one!

Answer 15

now try
B U C
do what I did

Answer 16

sorry my computer crashed ;/

Answer 17

B U C
x ≥ 5 U x = 5
x ≥ 5 or x=5

notice that x≥5 includes x=5, so we can simplify that to just
x≥5

Answer 18

did you finish this question ?

Answer 19

Yes! Thank you so much for your help! :)