Mathematics: Find the S20 of this series 2, 6, 18,..

Find the S20 of this series 2, 6, 18,.. - id2026187711060, inucornspineapple

Ответ:

20vmiller

02.02.2022

Mathematics

Multiply it by 3 until you get it

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Ответ:

dorindaramirez0531

02.02.2022

Mathematics

The first term in our sequence = 2

The common ratio = 6 / 2 = 3

n = the term we want to find.

2 * (3)^(n - 1)

2 * (3)^(20 - 1)

2 * (3)^(19)

2 * 1162261467

2324522934 is the 20th number in the series.

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Ответ:

itscheesycheedar

27.03.2022

Mathematics

$\bf \begin{array}{cccccclllll}&\\
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\&\\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\&\\
y&=&{{ k}}&\cdot&x&\\
&\\
&& y={{ k }}x&\\
\end{array}& \\\\\\
\textit{we know that }
\begin{cases}
y=12\\
x=1.2
\end{cases}\implies y=kx\implies 12=k\cdot 1.2$

solve for "k" to find "k", or the "constant of variation"

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Find the S20 of this series
2, 6, 18,..

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