Answers

2016-06-28T20:10:03+08:00
_,_,-12,_,_,_,8 gawin nating first term yung -12 dn 5th term ang 8 8=-12+(5-1)d 8+12=4d 20=4d D=5 so ang first pala is equal sa -22 dn para makuha ang sum dapat makuha muna yung 10th term 10Th= -22+(10-1)5 =-22+45 =23 S sub 10= 10/2(-22+23) = 5(1) =5 So 5 yung answer
0