barisan aritmatika 2 4 6 8 ... suku ke 20=
Matematika
jenius138
Pertanyaan
barisan aritmatika 2 4 6 8 ... suku ke 20=
2 Jawaban
-
1. Jawaban eripane05
b = 4-2 = 2
U20 = a + 19b
=> 2 + 19(2)
=> 2 + 38
=> 40 -
2. Jawaban stef7
2 4 6 8 ......
a= 2
B = 2
U20= a+(n-1).b
= 2+(20-1).2
= 2+ 19.2
= 2+ 38
= 40