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

What is language in which specific words show an exact meaning based on context?

What is the equation of a line that passes through (-5, 0) and (4,18) in slope-intercept form?

I watched it [the ball] closing in Clean and untouched, transfixed By its easy arc before it hit My forehead with a thud. How does the ball most likely feel whe

Look at the equation below. d=(ri+r2)t Which of the following shows the equation solved correctly for 11? O ri= n1 = 12 T = det T2 r = -2 O T1= . dra

What is the theme of a text? A. The author's message B. The subject of the text C. The text's structure D. The topic of the text

Thank you all for using brainly! Have a very happy Halloween!

A student noticed that a potato left on the counter had begun to sprout. She decided to cut the potato into chunks and plant them. What is true about the plants

Does the following relation represent a function? {(14, 15), (5, 7), (3, 10), (11, 1), (5,8)] Yes O No Pls help soon

Which behavior is one of the warning signs of s.u.i.c.i.d.e? decreasing the use of alcohol or drugs giving away a collection of prized belongings having trouble

Simplify.[tex] {8}^{4} \times {8}^{5} = {8}^{?} [/tex]Enter the missing exponent.