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anonymous
 one year ago
PLEASEEEEE HELPPPPPP Find the sum of a finite geometric sequence from n = 1 to n = 6, using the expression –2(5)n – 1
anonymous
 one year ago
PLEASEEEEE HELPPPPPP Find the sum of a finite geometric sequence from n = 1 to n = 6, using the expression –2(5)n – 1

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0My options are 1,223 –1,023 –7,812 7,812

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1if its geometric the the nth term = a r^(n  1) here we have a  = 2 , and r = common ratio = 5 and n is the number of the term so you need to plug thes values into the formula for n terms Sn = a * (r^n  1)  r  1 n will equal 6

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1* formula for the sum of n terms

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1as i said a = 2 , r = 5 and n = 6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it's 2 times (5^6  1) over 5 1?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you so much!!!!!!!!!!!!!!!!!!!
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