. = a1.b1 + b1.b2
90 = (10)(5) + (2)(4x)
90 = 50 + 8x
8x = 90 - 50
8x = 40
x = 40/8
x = 5
Jadi, nilai x adalah 5.
Mapel: Matematika
Kelas: X
Materi: Bab 7.1 - Vektor
Kode Kategorisasi: 10.2.7.1
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Penyelesaian
90 = (10)(5) + (2)(4x)
90 = 50 + 8x
8x = 90 - 50
8x = 40
x = 40/8
x = 5
Kesimpulan
Jadi, nilai x adalah 5.
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DETAIL JAWABAN
Mapel: Matematika
Kelas: X
Materi: Bab 7.1 - Vektor
Kode Kategorisasi: 10.2.7.1