JazzyMathNerd JazzyMathNerd

14-03-2018
Mathematics

contestada

Find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1024?

Respuesta :

sqdancefan sqdancefan

14-03-2018

The common ratio is 2, so the sum is
.. a1*(r^n -1)/(r -1)
.. = 4*(2^9 -1)/(2 -1)
.. = 4*511
.. = 2044

The sum of the sequence is 2044.

Answer Link

Otras preguntas

find the distance between two 74.0kg physics students that experience a gravitational force of 1.2 times 10 ^-8 N

which strategy could be used to solve 12×43?

Draw the electron dot structure for each of the molecules below A. NCI3 B. CO2 C.H2S D.SO3

Which of the following is NOT one of the four major processes of respiration? A. oxygen-hemoglobin dissociation curve. B. pulmonary gas. C. exchange gas D. tran

Peter has $10 to spend at the fair. Write and solve an inequality to find how many rides Peter can go on if each ride costs $.75.

When an organization hires new employees, there may be no more important part of that process than the organizational socialization process. This process takes

The photograph shows two monkeys staying warm in the snow, Which of these energy transformations is taking place in the monkeys bodies? O O O A. Solar energy -

Oliva was a sophomore thriving in college when her father was laid off from his job. Even with financial aid, the family could no longer afford to send her to c

Find the degree of the polynomial: −3x^3y^3+2.5xz^2−5xz^2

Graph the line with slope 4/3 and y-intercept -3