3 years ago

Write the explicit formula for the geometric sequence. Then find the fifth term in the sequence.

Mathematics

2 answers:

Korvikt [17]3 years ago

7 0

Answer:

B. an = -4 *(-2)^n-1;-64

mr_godi [17]3 years ago

6 0

The sequence: a 1 = - 4, a 2 = 8, a 3 = -16,...
a 2 = a 1 * r
8 = - 4 * r
r = 8 : ( - 4 )
r = - 2
a n = a 1 * r^(n-1)
a 5 = - 4 * ( - 2 ) ^4 = - 4 * 16 = - 64
Answer:
The fifth term in the sequence is - 64.

You might be interested in

Slope= -1/2 Line passes through the point (9,8). Write equation with point slope form

irina1246 [14]

ANSWER: y-8= -1/2(x-9)

3 0

2 years ago

Read 2 more answers

The area of a rectangular garden is given by the trinomial x2 + x – 42. What are the possible dimensions of the rectangle? Use f

Murrr4er [49]

Answer:

Step-by-step explanation:

Hello, please consider the following.

$x^2+x-42\\\\\text{The sum of the zeroes is -1=-7+6 and the product is -42=-7*6.}\\\\\text{So, we can factorise.}\\\\x^2+x-42\\\\=x^2+7x-6x-42\\\\=x(x+7)-6(x+7)\\\\=(x+7)(x-6)$