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Find the 9th term of the geometric sequence 5, -25, 125, ..

Find the 9th term of the geometric sequence 5, -25, 125, ..
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Find the 9th term of the geometric sequence 5, -25, 125, ..

asked
User Kenecaswell
by
8.5k points

1 Answer

2 votes

Answer:

5^9

Explanation:

bn= b1*r^(n-1)

b9=b1*r^8

r=-25/5=-5

b9= 5*5^8=5^9

answered
User Ranaldo
by
7.7k points
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