A=5
B=3
N=30
Sn=n/2(2.a+(n-1)+b
jwb ya tnks.![]()
B=3
N=30
Sn=n/2(2.a+(n-1)+b
jwb ya tnks.
[tex]deret \: aritmatika \\ \\ sn = \frac{n}{2} (2a + (n - 1)b) \\ \\ s30 = \frac{30}{2} (2.5 + (30 - 1)3) \\s30 = 15(10 + (29)3) \\ s30 = 15(10 + 87) \\ s30 = 15(97) \\ s30 = 1455[/tex]
[answer.2.content]
