tolong kakak yang pinter mtk

a =3
a. rasio = r = u2/u1
=6/5 : 3
= 6/5 x 1/3
=2/5

b. U6 =ar^6-1
= ar^5
= 3 x (2/5)^5
= 3 x (2^5/5^5)
= 3 x32/3125
= 96/3125

a.) rasio
[tex]r = \frac{u2}{u1} \\ \\ r = \frac{ \frac{6}{5} }{3} \\ \\ r = \frac{2}{5} [/tex]

b.) suku ke-6

[tex]a = 3 \\ r = \frac{2}{5} [/tex]

[tex]Un = {ar}^{n - 1} \\ \\ U6 = 3( \frac{2}{5}) {}^{6 - 1} \\ \\ U6 = 3( \frac{2}{5} ) {}^{5} \\ \\ U6 = 3(\frac{32}{3125}) \\ \\ U6 = \frac{96}{3125}[/tex]