Hi, if it's possible to answer this now, Thank you so much. If you don't know the answer, that's ok :D

Answer:
5x4^10
Step-by-step explanation:
Hope this helps have a nice day :)
Answer:
5. [tex]4^{9}[/tex]
Step-by-step explanation:
There is a common ratio r between consecutive terms, that is
r = 20 ÷ 5 = 80 ÷ 20 = 320 ÷ 80 = 4
This indicates the sequence is geometric with n th term
[tex]a_{n}[/tex] = a . [tex]r^{n-1}[/tex]
Here a = 5 and r = 4 , thus
[tex]a_{10}[/tex] = 5. [tex]4^{9}[/tex]