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vredina [299]
3 years ago
6

What is the value of r of the geometric series?

Mathematics
2 answers:
Phantasy [73]3 years ago
4 0

Answer:

<h3>0.8</h3>

Step-by-step explanation:

Given the formula for the geometric series expressed as;

\sum \left \{ {3} \atop {1}} \right 1.3(0.8)^{n-1}

The nth term of a geometric progression is expressed as;

T_n = ar^{n-1}\\

a is the first term

r is the common ratio

Comparing both equations;

0.8^{n-1} = r^{n-1}\\Cancel \ the \ powers\\0.8 = r\\r = 0.8\\

Hence the value of r of the geometric series is 0.8

ser-zykov [4K]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Just took test

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