Question

Tolong jawabkan soal nomor 1,2,3,& 4 please bantu ya..??

Answer 1

1)
a=2 b=4
u50=2+(50-1)4
=2+49.4
=2+196
=198

2)
1,3,6,10=>15,21,28

3)
u5=13
u8=22
u8-u5=22-13
u3=9
b=3
u20=u8+17.b
=22+17.3
=22+51
=73

4)
u7=a+6b=38
u3=a+2b=18
-------------------
4b=20
b=5

a+2b=18
a+10=18
a=8

sn=(n/2)(2a+(n-1)b)
s24=(24/2)(16+(24-1)5)
=12(16+(23)5)
=12(16+115)
=12(131)
=1572