Find the 9th term of the geometric sequence 10, 40, 160, ...
1 answer:
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Answer:
Step-by-step explanation:
8^2+5^2=c^2
64+25=c^2
89=c^2
c= <-- this is the length of the rectangle at the bottom
2^2+()^2=c^2
4+89=c^2
c= <-- length of dotted line (diagonal)