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Given the sequence –3, 0, 3, which of the following is equivalent to:
 11 months ago
 11 months ago
Given the sequence –3, 0, 3, which of the following is equivalent to:
 11 months ago
 11 months ago

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trumpetmaster7777Best ResponseYou've already chosen the best response.0
\[\sum_{n=5}^{8}A subscript N\]
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
54 102 144 162
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
@primeralph @terenzreignz
 11 months ago

RolyPolyBest ResponseYou've already chosen the best response.1
First term is 3, common difference is 0(3) = 3 So, the sequence is \[a_n = 3+3(n1)\]
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
so, we can do that plugging n2, n3 etc. into the next equations?
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
[3+3(n1)]+[3+3(n2)] etc.?
 11 months ago

RolyPolyBest ResponseYou've already chosen the best response.1
You need to find sum from the fifth term to the eighth term, so, find a5, a6, a7, a8 and add them together.
 11 months ago

RolyPolyBest ResponseYou've already chosen the best response.1
n is the number of term
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
that's right we start on 5 right? so like this?
 11 months ago

RolyPolyBest ResponseYou've already chosen the best response.1
e.g. \[a_5 = 3+3(51)=...\]
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
[3+3(n5)]+[3+3(n6)]+[3+3(n7)]+[3+3(n8)]?
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
(3+3n15)+(3+3n18)+ (3+3n21)+ (3+3n24)?
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
am I doing this right?
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
(3n18)+(3n21)+(3n24)+(3nx)+(3n27)
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
i'm not sure what to do from there
 11 months ago

RolyPolyBest ResponseYou've already chosen the best response.1
\[a_5 = 3+3(51)\]\[a_6 = 3+3(61)\]\[a_7 = 3+3(71)\]... Then, find \(a_5+a_6+a_7+a_8\)
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
=−3+3(5−1) =−3+3(6−1) =−3+3(7−1) =3+3(81)
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
=6+15 =6+18 =6+21 =6+24 =9 =12 =15 =18 9+12+15+18
 11 months ago

trumpetmaster7777Best ResponseYou've already chosen the best response.0
thank you so much guys
 11 months ago
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