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axelneel
 one year ago
Best ResponseYou've already chosen the best response.0i keep coming up with 126 but my options are 70,72,111,114. PLEASE HELP

RaphaelFilgueiras
 one year ago
Best ResponseYou've already chosen the best response.1dw:1372218335949:dw

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[\large a_{n}= a_{1}+(n1)d\]

RaphaelFilgueiras
 one year ago
Best ResponseYou've already chosen the best response.1find r and then just plug in that first equation

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[\large 66 =12+(271)d \]\[\large 66= 12 +26d\]\[\large 78 = 26d\]\[\large d= 3\] \[\large a_{42} = 12 + 3(421)\]\[\large a_{42} = 12 + 123\]\[\large a_{42} = 111\]

axelneel
 one year ago
Best ResponseYou've already chosen the best response.0i have no idea what i was doing wrong... but thank you
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