Ответ:
г) 50
Объяснение:
[tex]a_{15}[/tex] = [tex]a_{14}[/tex] + d
[tex]a_{16}[/tex] = [tex]a_{14}[/tex] + 2d
35 = 65 + 2d
-30 = 2d
d = -15
[tex]a_{15}[/tex] = 65 - 15 = 50
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Ответ:
г) 50
Объяснение:
[tex]a_{15}[/tex] = [tex]a_{14}[/tex] + d
[tex]a_{16}[/tex] = [tex]a_{14}[/tex] + 2d
35 = 65 + 2d
-30 = 2d
d = -15
[tex]a_{15}[/tex] = 65 - 15 = 50