Suppose R = {1, 3, 5, 7, 9, 11, 13, 15, 17} and D = {3, 6, 9, 12, 15, 18, 21, 24, 27}. What isR intercept D? (the upside down smile is intercept, right??)

The "intercept" in set theory typically refers to the intersection of two sets, denoted by the symbol ∩. The upside-down smiley face symbol (⊙) is not commonly used to represent the intersection of sets.

To find the intersection of sets R and D, we need to identify the elements that are common to both sets.

R ∩ D = {3, 15}

Therefore, the intersection of sets R and D is {3, 15}.

Yes, the upside-down smile (∩) represents the intersection of two sets. To find the intersection of sets R and D, follow these steps:

1. Identify the common elements between the two sets R and D. These elements must appear in both sets.
- Common elements between R and D: 3 and 15

2. Write down the common elements to represent the intersection of sets R and D:
- R ∩ D = {3, 15}

Therefore, the intersection of sets R and D is {3, 15}.

Yes, the upside-down smile represents the intersection of two sets. To find the intersection between two sets, you need to identify the elements that are common to both sets.

In this case, to find R ∩ D (the intersection of sets R and D), you need to determine the elements that appear in both sets R and D.

Set R = {1, 3, 5, 7, 9, 11, 13, 15, 17}
Set D = {3, 6, 9, 12, 15, 18, 21, 24, 27}

By comparing the two sets, we can see that the numbers 3 and 9 appear in both sets. Therefore, the intersection of sets R and D, denoted as R ∩ D, would be {3, 9}.

Hence, the intersection of sets R and D is the set {3, 9}.