If C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and D = {numbers divisible by 3 from 1 to 12}, what is C ∩ D?

A) {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

B) {3, 6}

C) {3, 6, 9, 12}

D) { }

I chose A, is that correct?

Question

If C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and D = {numbers divisible by 3 from 1 to 12}, what is C ∩ D?

A) {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

B) {3, 6}

C) {3, 6, 9, 12}

D) { }


I chose A, is that correct?

anonymous · Answer

@Notamathgenius @Notamathgenuis1 (not sure which one you are on .-.)

notamathgenius · Answer

Hai good morning, Ok You need to take all those numbers and see which ones divide EQUALLY into 3, I can say D is out. :D and so is A, now you do the rest .:D

anonymous · Answer

It  is C. 4numbers between 1 and 12 are divisible by 3

notamathgenius · Answer

OMG IM teaching here Not giving Answers :(

anonymous · Answer

Ohhh sorry :)

anonymous · Answer

thanks @Notamathgenius for teaching me(: and thanks @Munqith xD

notamathgenius · Answer

haleyy don't look at his response >:D No problem :D d

anonymous · Answer

haha i shant! >;D

anonymous · Answer

Hhhh anytime

notamathgenius · Answer

Anymore?

anonymous · Answer

pftttttt..... of course!

notamathgenius · Answer

WOOHOO

anonymous · Answer

Identify the correct slope and y-intercept of the equation 5x - 3y = -6

 slope = 5/3; y-intercept = (0, 2)

 slope = -5; y-intercept = (0, -6)

 slope = -3/5; y-intercept = (0, 2)

 slope = 5/3; y-intercept = (0, -6)

anonymous · Answer

So guys I' new here, can anyone help me figure out how to use this site?

notamathgenius · Answer

Yea message me i will tell you. Haleyy Like yesterday, just plug in those numbers on the right for x and y and see which ones give you -6 :D

anonymous · Answer

ummm its pretty simple! lol you just click the people you wanna 'fan' 'block' 'view' or 'message' and then click your option! and to get someone to  view what you want, just type '@' then their name. Ex: @Munqith

anonymous · Answer

Ahh okay soblet  try messaging our NOT math genius :)

anonymous · Answer

oh but the not is silent! :D lol... you ARE a math genius c':

notamathgenius · Answer

haha thanks I feel special :P I am good at helping just not doing it myself :D

anonymous · Answer

haha im bad at all of it! :D lol help my last one please c:

notamathgenius · Answer

Ok I can tell you its either A or C not saying Which one ;D

anonymous · Answer

hmmmnmmm... imma guess..... A?!?!

notamathgenius · Answer

XDDDDD To funny, you sure?

anonymous · Answer

maybe e.e am i?

notamathgenius · Answer

^_^ hehe Just chose gurl.

anonymous · Answer

Hhh okay so this is gonna sound i'm on a mobile phone and it seems that the site isn't quite compatible with it, so everytime I try to click on "become a fan" the wind9w scrolls down because one of yu is typing

anonymous · Answer

....are you a boy or a girl? ?yoou give off girly vibes e.e @Notamathgenius

notamathgenius · Answer

I am a guy that likes guys lol

anonymous · Answer

oh cool! :D lol i like guys who like girls who are me xD

notamathgenius · Answer

I lean towards girls but i like guys :P

anonymous · Answer

you gotta boy fran? i gotta boyfran c:

anonymous · Answer

IS THE ANSWER C?!?

notamathgenius · Answer

No The guy i like has a bf :( But i have a gf :D

notamathgenius · Answer

OMG Finally Haleyy :P

anonymous · Answer

lol xD thats crazy! and yay!!!

notamathgenius · Answer

yes i must get him >:D

anonymous · Answer

get him hunny boo boo ;D lol i hate that fat ugly grimlin >.<

anonymous · Answer

not saying i hate you though o.o

notamathgenius · Answer

^_^ haha i will :P someday Hate me idc :P up to you

anonymous · Answer

nope nope never :p your helpful, i need you to be fran c:

notamathgenius · Answer

haha Ok :D be my friend then :D

anonymous · Answer

plus your cool as stuff n_n

notamathgenius · Answer

haha thank you, you are to funny though :D

anonymous · Answer

The depth d(x), in feet, of a circular swimming pool at a point x feet from the edge is represented by the function below. 

 d(x) = 1 + x/8

If the depth varies from 1 foot to 4 feet, which inequality describes the domain of the function?

 0 ≤ x ≤ 8

 0 ≤ x ≤ 24

 0 ≤ x ≤ 40

 1 ≤ x ≤ 8

notamathgenius · Answer

@TrashMan914  Need some assistance, mate.

notamathgenius · Answer

This is confusing, D:

anonymous · Answer

i know i forgot how to do it :(

notamathgenius · Answer

I never liked Domains, let me get Trash. hes a genius at this

anonymous · Answer

trash genius!! xD

notamathgenius · Answer

XDDD Like smarter than me :P

anonymous · Answer

and me! :D

notamathgenius · Answer

HAHA yes.

anonymous · Answer

i wanna say B e.e

notamathgenius · Answer

What about D?

anonymous · Answer

C ∩ D is whatever is common to both sets C and D. Set D contains all of the numbers divisible by 3 from 1 to 12 (which are 3, 6, 9, and 12). So:

C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and D = {3, 6, 9, 12}.

Thus, C ∩ D = {3, 6, 9, 12}.

notamathgenius · Answer

We got that.

anonymous · Answer

lol. We are on a different question, it is the last one, hold on imma paste it here again

anonymous · Answer

The depth d(x), in feet, of a circular swimming pool at a point x feet from the edge is represented by the function below. 

 d(x) = 1 + x/8

If the depth varies from 1 foot to 4 feet, which inequality describes the domain of the function?

 0 ≤ x ≤ 8

 0 ≤ x ≤ 24

 0 ≤ x ≤ 40

 1 ≤ x ≤ 8

anonymous · Answer

I think it is B.

notamathgenius · Answer

Guessing? :P

anonymous · Answer

no? o.o

notamathgenius · Answer

haha ok ^_^

anonymous · Answer

depth varies from 1 ft to 4 ft
1 ≤ d ≤ 4
1 ≤ 1 + x/8 ≤ 4 .... multiply by 8
8 ≤ 8 + x ≤ 32
0 ≤ x ≤ 24

anonymous · Answer

1 ≤ d ≤ 4
1 ≤ 1 + x/8 ≤ 4
8 ≤ 8 + x ≤ 32
0 ≤ x ≤ 24

notamathgenius · Answer

OMG YOU WERE RIGH!!!!!!!!!!!!!!!!!!!!

anonymous · Answer

what he said^^

notamathgenius · Answer

Right*

anonymous · Answer

be proud!

notamathgenius · Answer

I am very proud tear tear :"D

anonymous · Answer

Use the distributive property to simplify the expression below:
-5x + 15/-5

A) -x - 3

B) x + 15

C) x + 3

D) x - 3

notamathgenius · Answer

I know this!

anonymous · Answer

yay!!

notamathgenius · Answer

Well, I am thinking you may have to eliminate A.

anonymous · Answer

and B?

anonymous · Answer

...Well, for starters, 15/5 is 3...

notamathgenius · Answer

I think its D, Trash am I right?

anonymous · Answer

My calculations show -5x - 3, which is not an answer here.

anonymous · Answer

so how bout C? i think C.

notamathgenius · Answer

Well we know its going to have -5 so D is the most conclusive answer.

anonymous · Answer

@TrashMan914

notamathgenius · Answer

Haleyy, I would go with D

anonymous · Answer

D is the most logical.

anonymous · Answer

okay c:

notamathgenius · Answer

yes i was right >:D

anonymous · Answer

Layla has allotted $76 for gifts while on vacation. She plans to buy a souvenir for her parents for $16 and spend the rest on 4 T-shirts for her friends. If x represents the price, in dollars, of a T-shirt, which inequality correctly represents the money Layla will spend on souvenirs?

 4x + 16 ≤ 76

 16x + 4 ≤ 76

 4x + 16 ≥ 76

 16x + 4 ≥ 76

anonymous · Answer

A?

notamathgenius · Answer

Its going to have to be less that or equal to 76, so B Is wrong. and D is wrong so it leaves A or C ;D Chose wisely

anonymous · Answer

i think it is A though... is it right?! just tell meh c:

notamathgenius · Answer

No, Because it is saying its going to be Greater than or Equal to, and she only wants to spend 76 not more than that. SO its C

anonymous · Answer

oh .-.

notamathgenius · Answer

Don't be upset, mistakes happen :D