mekhaiyasanai mekhaiyasanai

23-08-2022
Mathematics

contestada

If each term in a geometric sequence is defined as
an = -6. (-1)"-1
what's the sum of the first 20 terms of
the sequence?

A. 0
B. 6
C. 120
D. 15

Respuesta :

Medunno13 Medunno13

27-08-2022

Answer:

A

Step-by-step explanation:

[tex]a_n=-6(-1)^{n-1} [/tex]

The first term is -6 and the common ratio is -1.

The sum is thus

[tex]\frac{6(1-(-1)^{20})}{1-(-1)}=0[/tex]

Ver imagen Medunno13

Answer Link

Otras preguntas

A kitten pushes a ball of yarn rolling toward it at 1.00 cm/s with its nose, displacing the ball of yarn 17.5 cm in the opposite direction in 2.00 s. What is th

show that at least 3 of any 25 days chosen must fall in the same month of the year.please halp!

What was vomitorium used for?

Q2. In a 4x100 m relay race, total track length is 200m and time taken by one particular group is 50.2 s. What is the average speed and average velocity of that

why is gold preferred as a superior metal over silver and bronze?

please help me write equation for each condition listed. 1- The vertical line that passes through ( –7, 4 ) 2- The horizontal line that passes through

find the value of x , if log₂ [log₅ (log₃x)] = 0

A ball of mass 2 kg is kept on the hill of height 3 km. Calculate the potential energy possessed by it ?How can I get the potential energy ?

solve the problem by using mathematical sentence and solve then label your answer.A province produced 2,543,475 metric tons of sugarcane in 2003, and 4,905,369

What was vomitorium used for?