See the table below Nilai uts : 4 5 6 8 10 Frekuensi:20 40 70 a 10 If mean from above table is 6 Count valve of a?
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Pertanyaan
See the table below
Nilai uts : 4 5 6 8 10
Frekuensi:20 40 70 a 10
If mean from above table is 6
Count valve of a?
Nilai uts : 4 5 6 8 10
Frekuensi:20 40 70 a 10
If mean from above table is 6
Count valve of a?
1 Jawaban
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1. Jawaban fatimah3085
6 = {(4 × 20) + (5 × 40) + (6 × 70) + (8 × a) + (10 × 10)} / (20 + 40 + 70 + a + 10)
6 × (160 + a) = (80 + 200 + 420 + 8a + 100
960 + 6a = 800 + 8a
960 - 800 = 8a - 6a
160 = 2a
a = 80