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

Robert accepted a new job at a company with a contract guaranteeing annual raises. Let S represent Robert's salary after working for n years at the company. The

answer this plz cdfdsfgdgshsh

umulative Exam Active 11 What are the values of the digits in 90,406? O 9 thousands, 4 tens, and 6 ones 9 thousands, 4 hundreds, and 6 ones 9 ten thousands, 4 t

Which number line best shows the position of 13? 13 + + + -1 -4 -3 -2 0 1 1 N 3 4 13 - + -4 -3 -2 -1 o 1 2 3 4 13 O A + + + 2 -4 -3 -2 -1 0 1 3 4 113 --5 -3 -2

What the correct answer now.

based on paragraph 43, what is dr king's perspective on the future of the freedom movement ?

Write an algebraic expression for the phrase. Six times a number h plus seven.

Find an answer to your question The perimeter of a rectangle is 222 millimeters if the length of the rectangle is 60 millimeters what is the width ... 1 answer

If the diameter of a circle is an inch, which expression best describes the circumference, in inches?

Compare the speed of light in water to the speed of sound in water