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Катя24082000
@Катя24082000
March 2022
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Шестой член арифметической прогрессии -3; -7; -11;.... Равен ?
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Lesben
A1=-3,a2=-7,a3=-11,a4=-15,a5=-19, a6=-23
d=a2-a1=a3-a2=.......,d=-7-(-3)=-7+3=-4,d=-4
an=a1+(n-1)d
a6=-3+5.(-4)=-3-20=-23
a6=-23
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Answers & Comments
d=a2-a1=a3-a2=.......,d=-7-(-3)=-7+3=-4,d=-4
an=a1+(n-1)d
a6=-3+5.(-4)=-3-20=-23
a6=-23