Mathematics: What is the sum of the first seven terms of the geometric series? 3 + 12 + 48 + 192 + 4,372 12,288 16,383 65,535

What is the sum of the first seven terms of the

jasminali7956

10.03.2022

Option 3rd is correct.

Step-by-step explanation:

Given: 3 + 12 + 48 + 192 + .......

We have to find : Sum of first seven term of the given Geometric series.

First term , a = 3

Common ratio , r = $\frac{12}{3}=4$

Sum of the n term of series, $S_n=\frac{a(1-r^n)}{1-r}$

So,

$S_7=\frac{3(1-4^7)}{1-4}$

$S_7=\frac{3(1-4^7)}{-3}$

S_7=-(1-16384)

S_7=-(-16383)

S_7=16383

Therefore, Option 3rd is correct.

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igompers

26.09.2020

To support her discussion it would be best for Alexus to use GRAPH B for her presentation.

Alex should use this graph for her presentation because the number of faulty products APPEARS TO DECREASE LESS on this graph.

Step-by-step explanation:

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