kevinacalvin kevinacalvin

29-10-2016
Mathematics

contestada

what is the sum of the sequence 46+47+48+49+...+115

Respuesta :

Аноним Аноним

29-10-2016

46+47+48+49+115= 305

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luvjones726 luvjones726

29-10-2016

46+(n-1)1=115

46+n-1*1=115

46+n-1=115

n+45=115

n=70

Plug back into equation to check.

46+(70-1)1=115

46+69=115

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