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anonymous
 one year ago
HELP! with summation notation. will medal! (see attachment)
anonymous
 one year ago
HELP! with summation notation. will medal! (see attachment)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0please please help with the first one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you need to find the sum?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The first one is arithmetic so we can do the following First find the first and last terms by putting n= 1 and n = 50 \( \huge a_1 = 3(1) + 7 = 10\) 10 is your first. Now find the last \( \huge a_1 = 3(50) + 7 = 157\) Ok, next part coming. I am doing number 6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you still need help?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now we use the formula \( \huge S_n = \frac{n}{2}(a_1+a_n) \) Now just plugin our numbers \( \huge S_{50} = \frac{50}{2}(10+157) \) \( \huge S_{50} = 4175\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is that the answer?? thats how you do it? @Nixy

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That is all the steps and the answer is 4175

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0could you also help with 7? then ill do 8 and 9 by my self @Nixy

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@pooja195 please help with 7!!??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Number 7 looks like the Sum of an Infinite Geometric Series

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if i do it will you check it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0actually i have number 7 done but I dont understand 8

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i dont get how there is no number above the "e"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\( \huge \sum_{n=1}^{12} 2*4^n \) First you need to rewrite the series so it is in the form of \( \huge \sum_{n=1}^{12} a_1*r^{n1} \) \( \huge \sum_{n=1}^{12} 8*4^{n1} \) Now identify a_1 and r ? If r < 1 the series is converges and we need to find the sum if not it, there is no need to find the sum Sorry I am at work and that is why it is taking me a little bit of time.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is this number 8? @Nixy
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