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01-09-2016
Mathematics

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Determine the position of a given value.

-3,-8,-13,..........,-58

( what position is -58, in other words )

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Аноним Аноним

01-09-2016

[tex]-58=-3+(n+1)(-5)[/tex]

[tex]-58=-3-5n+5[/tex]

[tex]-58=2-5n[/tex]

[tex]-60=-5n[/tex]

[tex]-60/5=-5n/5[/tex]

[tex]n=12[/tex]

[tex]-58 \ is \ in \ the \ 12th \ position [/tex]

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