Diketahui rata rata dari data 7,4,3, 8,x,6,5,9,x,6,5,8,9,7,6,3,7,5,8,4 adalah 6 tentukan nilai x​

x = 5

Penjelasan dengan langkah-langkah:

rata-rata = jumlah total seluruh nilai : banyak nilai

6 = 7+4+3+8+x+6+5+9+x+6+5+8+9+7+6++3+7+5+8+4 : 20

6 = 110 + 2x : 20

6 x 20 = 110 + 2x

120 = 110 + 2x

120-110 = 2x

10 = 2x

10:2 = x

x = 5

Jawaban:

x = 5

Penjelasan dengan langkah-langkah:

banyak nilai

x = 2 >> x . 2 = 2x

3 = 2 >> 3 x 2 = 6

4 = 2 >> 4 x 2 = 8

5 = 3 >> 5 x 3 = 15

6 = 3 >> 6 x 3 = 18

7 = 3 >> 7 x 3 = 21

8 = 3 >> 8 x 3 = 24

9 = 2 >> 9 x 2 = 18

total 20

rata – rata = 2x + 6 + 8 + 15 + 18 + 21 + 24 + 18 / 20

6 = 2x + 110/20

6 x 20 = 2x + 110

120 – 110 = 2x

10 = 2x

10/2 = x

5 = x