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AlinsJersey
@AlinsJersey
July 2022
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Найдите разность арифметической прогрессии если а) а1=17 ,а11=86 б) а1=17,а29= -9 в) а1=1,а12=8,7
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lazybone305
A) а1 = 17, а11 = 86
а 11 = а1 + 10 d
86 = 17 + 10d
d = 6.9
б)
а1=17, а29= -9
a29 = a1 +28 d
-9 = 17 + 28d
d= - 26/28
в) а1=1, а12=8,7
a12 = a1 + 11d
d = 0.7
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Answers & Comments
а 11 = а1 + 10 d
86 = 17 + 10d
d = 6.9
б) а1=17, а29= -9
a29 = a1 +28 d
-9 = 17 + 28d
d= - 26/28
в) а1=1, а12=8,7
a12 = a1 + 11d
d = 0.7