Jawaban:
b. 10n+90
Penjelasan dengan langkah-langkah:
diket:
a=100
b=10
dit: n?
jawab:
Un= a+(n-1)b
= 100+(n-1)10
= 100+10n -10
=10n +90
a= 100
b= 90-100= -10
Rumus Un=
= 100 + (n-1) -10
= 100+ -10n +10
= 110 - 10n
= -10n + 110 (d)
semoga membantu :)
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Jawaban:
b. 10n+90
Penjelasan dengan langkah-langkah:
diket:
a=100
b=10
dit: n?
jawab:
Un= a+(n-1)b
= 100+(n-1)10
= 100+10n -10
=10n +90
a= 100
b= 90-100= -10
Rumus Un=
Un= a+(n-1)b
= 100 + (n-1) -10
= 100+ -10n +10
= 110 - 10n
= -10n + 110 (d)
semoga membantu :)