3 years ago

9th term: a = 125; r = 1.2

Mathematics

1 answer:

Lilit [14]3 years ago

5 0

Answer:

537.47712‬

Step-by-step explanation:

a = 125 ... the first term?

r = 1.2

ok use the formula: a_n = (a_1) * r ^(n-1)

we want a_9 = (a_1) * r^(9-1)

a_9 = 125 * (1.2)^8 = 125 * 4.29981696‬ = 537.47712‬

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