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anonymous
 one year ago
find an equation for the nth term of the geometric sequence where the second and fifth terms are 8 and 512, respectively.
A. an=2*(4)^n+1
B. an=2*4^n1
C. an=2*(4)^n1
D. an=2*4^n
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anonymous
 one year ago
find an equation for the nth term of the geometric sequence where the second and fifth terms are 8 and 512, respectively. A. an=2*(4)^n+1 B. an=2*4^n1 C. an=2*(4)^n1 D. an=2*4^n @dan815 @michele_laino @nincompoop @campbell @paki @nnesha @e.mccormick

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@ash2326 @welshfella @KyanTheDoodle @mathmath333 @misssunshinexxoxo

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1if a1 is the first term and r = common ratio second term = a1r = 8 fifth term = a1r^4 = 512 dividing a1r^4 / a1r = 512/8 r^3 = 64 therefor r = 4

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1now you can see that a1*4 = 8 so now you can find what a1 is

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1nth term = a1r^(n1) so an = 2*(4)^(n1)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can u help me with another one?
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