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liubo4ka [24]
3 years ago
7

please please someone help!! im confused on the parentheses part. i will give brainliest and 20 points

Mathematics
1 answer:
Oliga [24]3 years ago
8 0

Answer:(first term)

a=27(4th term)

T4= a x r^3 = 64

substituting a as 27 in T4

27 x r^3 = 64

r^3 = 64/27

r=4/3

so; a=27, r=4/3

using the general formula of geometric progression,

a x r^n-1

substitute:.

27 x 4/3^n-1

= 27(4/3)^n-1

Answer: (C) HOPE THIS HELPS!

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