Diketahui barisan aritmatika 16, 30, 44, .... Nilai U20 – U10 = . . . . *
Matematika
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Pertanyaan
Diketahui barisan aritmatika 16, 30, 44, .... Nilai U20 – U10 = . . . . *
1 Jawaban
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1. Jawaban Eva2107
16,30,44...
a:16
b:14
U20-U10:...?
Jwb:
U20=a+(n-1)b
=16+(20-1)14
=16+(19)14
=16+266
=302
U10=a+(n-1)b
=16+(10-1)14
=16+(9)14
=16+126
=142
U20-U10=302-142
=160