Question

helppppppppppppppppppp (:
Find B D.
B: {−3, −1, 3, 4, 9, 11}
D: {numbers divisible by 3 from 1 to 15}

{3, 9}

{−3, −1, 3, 4, 9, 11}

{ }

{−3, −1, 3, 4, 6, 9, 11, 12, 15}

Answer 1

Symbol is missing between the B and D

Answer 2

ist'd like that and it's about Union and Intersection of Sets

Answer 3

the union of two sets is simply the combination of the two sets

so for example,

A = {1, 2, 3}

and

B = {4,5,6}


The union of A and B is

A U B = {1,2, 3, 4, 5, 6}

Answer 4

Remember to throw out any duplicates

Answer 5

so if i had like this question The set O represents the minimum temperatures, in degrees Fahrenheit, recorded in the city of Orlando in a year.

O = {49, 50, 50, 55, 56, 60, 65, 65, 70, 71, 72, 72}

The set T represents the minimum temperatures, in degrees Fahrenheit, recorded in the city of Tampa in a year.

T = {52, 54, 55, 59, 59, 61, 62, 68, 68, 70, 74, 75}

How many elements are in the set O ∪ T?

would it be 2?

Answer 6

O U T = combination of sets O and T (to make one big set)

Remember to throw out duplicates