Question

DAda a o PA (10,14,18,...) , o trigessimo termo é :

Answer 1

$PA (10,14,18,...) \\\\ a_n=a_{30}=?\\a_1=10\\n=30\\ r=14-10=4\\ \\ a_n=a_1+(n-1)*r\\\\ a_{30}=10+(30-1)*4\to \\a_{30}=10+29*4\to \\a_{30}=10+116\to \\a_{30}=126$