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mary30092004
@mary30092004
June 2022
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найди средне арифметическая чисел -50 -49 -48......-1 0 1.....48 49 50 51
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TARTILLO
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найди средне арифметическая чисел -50 -49 -48....-10.
Sn=(a1+an)·n/2
cр. ар.(
-50 -49 -48....-10) =(Sn)/n =((a1+an)·n/2)/n=(a1+an)/2=(-50-10)/2=-30
cр. ар(1.....48 49 50 51)=(Sn)/n=((a1+an)·n/2)/n=(a1+an)/2=(1+51)/2=26
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найди средне арифметическая чисел -50 -49 -48....-10.Sn=(a1+an)·n/2
cр. ар.(-50 -49 -48....-10) =(Sn)/n =((a1+an)·n/2)/n=(a1+an)/2=(-50-10)/2=-30
cр. ар(1.....48 49 50 51)=(Sn)/n=((a1+an)·n/2)/n=(a1+an)/2=(1+51)/2=26