Since the sixth term is 1215 and the 5th term is 405, we know each term is 3 times more than the last.
Let 'n' represent the first term, then the sum of the first 9 terms can be written as:
n+3n+9n+27n+81n+243n+729n+2187n+6561n
which sinplifies to 9841n
since each term is 3 times the last, the first term must be 405 divided by 3, 4 times in total, which is 5
Now subsitute 'n' for 5, and we get 9841(5)
which is 49205 which is the answer.
Hope this helps
Answer:
<u>0.12, 6/50</u> are the answers.
Step-by-step explanation:
1/5 = 0.2
1.2/10 = 0.12
0.12 = 6/50
Have a nice day!
Answer:
Step-by-step explanation:
None of the choices is correct.
Circumference= 2πr = 30π cm
