Answer:
530
Step-by-step explanation:
[tex]a_n = a_1 + (n - 1)d[/tex]
[tex]n = 50, \ a_1 = -9, d = 11\\a_{50} = -9 + (50 - 1)\times 11\\[/tex]
[tex]= -9 + 539 \\= 530[/tex]
