bantuin dong gw doain yg batuin masuk surga asal gk ngasal jawabnya makasih
Penjelasan dengan langkah-langkah:
6)
U4 = 32 ----- a+3b = 32
U11 = 81 ----- a+10b = 81
_________ -
-7b = -49
b = 49/7 ---- b = 7
maka,
U4 = 32
a+3b = 32
a+3.7 = 32
a+21 = 32
a = 32-21
a = 11
sehingga,
U51
= a+50b
= 11+50.7
= 11+350
= 361
dan
Sn = n/2 (2a+(n-1)b)
S35 = 35/2 (2.11 + (35-1).7)
S35 = 35/2 (22+34.7)
S35 = 35/2 (22+238)
S35 = 35/2 . 260
S35 = 4550
[answer.2.content]
