Respuesta :

Answer:

9 is an element of set T.

Step-by-step explanation:

We are asked to find the meaning of the mathematical expression 9 ∈ T.

We know that sign ∈ means element of a set or a member of a set.

The expression 9 ∈ means 9 is an element of.

9 ∈ T means 9 is an element of set T.

Therefore, the meaning of our given expression is 9 is an element of set T.