The expression that represents well the geometric sequence is $f(n) = 8 \cdot 2^{n-1}$ and the value of the fourth term is 64. (Correct choice: B)

<h3>How to analyze geometric sequences</h3>

Geometric sequences are exponential expressions with discrete domain, whose form is presented and explained below:

$f(n) = a \cdot r^{n-1}$ , where a, r are real numbers and n is a natural number. (1)

Where:

Value of the starting term.
Common ratio of the series.

According to the statement, we know that the first term of the geometric sequence is 8 and between any two consecutive terms there is a common ratio of 2. If we know that a = 8, r = 2 and n = 4, then the fourth term of the series by means of (1) is:

$f(4) = 8 \cdot 2^{4-1}$

f(4) = 8 · 8

f(4) = 64

The expression that represents the geometric sequence is $f(n) = 8 \cdot 2^{n-1}$ and the value of the fourth term is 64.

To learn more on geometric sequences: brainly.com/question/11266123

#SPJ1

7 0

2 years ago

Will bought a pizza from mazzio's. His 7 friends come over for a pizza party. Each friend gets 2 slices of pizza. after the pizz

Readme [11.4K]

Answer:

14/17

There were 17 before the party and 3 after ward.

Step-by-step explanation:

7 x 2 = 14 + 3 = 17

5 0

3 years ago

Each interior angle of a regular polygon is 140°.Find the number of sides

castortr0y [4]

Step-by-step explanation:

Each interior angle=140°

(n-2)180°/n=140°

180°n-360°/n=140°

180°n-360°=140°n

180°-140°=360°

40°n=360°

n=360°/40°

n=9

Hence, the number of sides of the polygon is 9.

It is nonagon .

8 0

3 years ago