claudiapaloma04 claudiapaloma04

03-12-2020
Mathematics

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Find the 53rd partial sum of -1 + (-4) + (-7)...

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ndeluna890 ndeluna890

04-12-2020

Answer: -4187

Step-by-step explanation:

-1,-4,-7

^ ^

+-3 +-3 -4- -1= -3

S53= 53/2 [2(-1)+(53-1)] -3

2(-1)= -2 (53-1) = 52•3 53/2=26.5

26.5 [ -2+ -156]= -4187

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