mirandagray54 mirandagray54
  • 02-07-2021
  • Mathematics
contestada

If the 5th term in a geometric sequence is 162, and the common ratio is 3. What is the first term in the sequence?

Respuesta :

reinhard10158
reinhard10158 reinhard10158
  • 07-07-2021

Answer:

2

Step-by-step explanation:

a2 = a1×3

a3 = a2×3 = a1×3×3

=>

an = an-1 × 3 =

[tex]a1 \times {3}^{n - 1} [/tex]

a5 = 162 = a1×3⁴ = a1×81

a1 = 162/81 = 2

Answer Link

Otras preguntas

when a client wants to include whole grain foods in his or her daily intake a fitness professional could suggest
As can be expected, Antarctica is one of the wettest continents on earth. a. True b. False
An example of an internal chemical transmitter is a(n)
what is 7.5 quarts in pints
the perimeter is 54 inches and the length is 15 what is the width
Receptors that provide animals with information from the external environment are located in the _____. ears skin blood vessels joints tongue eyes muscles nose
What pivotal event led the United States to enter World War II?
Which of the following countries is NOT a developed nation? a. United States b. Canada c. Australia d. Mexico
What pivotal event led the United States to enter World War II?
what are the features of burton biscuits