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NO LINKS!! Write the first 5 terms of the geometric sequence

a1 = 6, r = 4

a1=
a2=
a3=
a4=
a5=

User Ablemike
by
2.7k points

2 Answers

4 votes
4 votes

Explanation:

since it is geometric sequence we will use the formula


tn = {ar}^(n - 1)

a = 6

r = 4

The first term

T1(a) = 6

The second term


t2 = {a * r}^(2 - 1)


t2 = {6 * 4}^(1 ) = 24

The Third Term


t3 = {a * r}^(3 - 1) = {a * r}^(2)


t3 = {6 * 4}^(2) = 6 * 16 = 96

The fourth term


t4 = {a * r}^(4 - 1) = {a * r}^(3)


t4 = {6 * 4}^(3) = 6 * 64 = 384

The fifth term


t5 = {a * r}^(5 - 1) = {a * r}^(4)


t5 = {6 * 4}^(4) = 6 * 256 = 1,536

i hope these helped

User Marvinav
by
2.9k points
7 votes
7 votes

Answer:

6, 24, 96, 384, 1536, ...

Explanation:


\boxed{\begin{minipage}{5.5 cm}\underline{Geometric sequence}\\\\$a_n=ar^(n-1)$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the first term. \\\phantom{ww}$\bullet$ $r$ is the common ratio.\\\phantom{ww}$\bullet$ $a_n$ is the $n$th term.\\\phantom{ww}$\bullet$ $n$ is the position of the term.\\\end{minipage}}

Given:

  • a = 6
  • r = 4

Substitute the given values of a and r into the formula to create an equation for the nth term:


a_n=6(4)^(n-1)

To find the first 5 terms of the geometric sequence, substitute n = 1 through 5 into the equation.


\begin{aligned}\implies a_1&=6(4)^(1-1)\\&=6(4)^(0)\\&=6(1)\\&=6\end{aligned}


\begin{aligned}\implies a_2&=6(4)^(2-1)\\&=6(4)^(1)\\&=6(4)\\&=24\end{aligned}


\begin{aligned}\implies a_3&=6(4)^(3-1)\\&=6(4)^(2)\\&=6(16)\\&=96\end{aligned}


\begin{aligned}\implies a_4&=6(4)^(4-1)\\&=6(4)^(3)\\&=6(64)\\&=384\end{aligned}


\begin{aligned}\implies a_5&=6(4)^(5-1)\\&=6(4)^(4)\\&=6(256)\\&=1536\end{aligned}

Therefore, the first 5 terms of the given geometric sequence are:

  • 6, 24, 96, 384, 1536, ...
User Vikiiii
by
3.0k points