Answer:
q3
Step-by-step explanation:
P°×q3
=1×q3
=q3
I think it is a rational number.
Answer:
15 possible combinations
Step-by-step explanation:
Given


Required
Determine the possible number of combinations
The question emphasizes on "selection" which means "combination".
So; To answer this question, we apply the following combination formula:

In this case:


The formula becomes:






<em>Hence, there are 15 possible combinations</em>
Answer:
9in
Step-by-step explanation:
radius is half the diameter
18/2 is 9 so the radius is 9in