
Sistem persamaan Tiga Variabel
Authored by Wahyu Prasetyo Wibowo
Mathematics
9th - 12th Grade
Used 15+ times

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15 questions
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1.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Tentukan himpunan penyelesaian dari
3x + 4y — 3z = 3
2x — y + 4z = 21
5x + 2y + 6z = 46
2.
MULTIPLE CHOICE QUESTION
30 sec • 20 pts
Perhatikan persamaan di bawah ini :
x - y + 2z = 15 ............ (1)
2p + q - r = 16 ............ (2)
5u - v + 3w = 10 .......... (3)
Yang merupakan contoh persamaan linear tiga variabel adalah persamaan ....
1, 2, dan 3
1 dan 2
2 dan 3
1 saja
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah toko buah menjual berbagai jenis buah-buahan di antaranya mangga, jeruk dan anggur. Jika pembeli pertama membeli 2 kg mangga, 2 kg jeruk, dan 1 kg anggur dengan harga Rp 70.000,00, pembeli kedua membeli 1 kg mangga, 2 kg jeruk, dan 2 kg anggur dengan harga Rp 90.000,00.
Pembeli ketiga membeli 2 kg mangga, 2 kg jeruk, dan 3 kg anggur dengan harga Rp 130.000,00 maka tentukanlah jumlah uang yang harus dibayar oleh seorang pembeli jika ia ingin membeli 1 kg mangga dan 2 kg jeruk.
Rp.10.000
Rp.20.000
Rp.30.000
Rp.40.000
Rp.50.000
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metode yang dikerjakan dengan cara mengeliminasi (menghilangkan) variabel-variabel di dalam sistem persamaan hingga hanya satu variabel yang tertinggal disebut..
Metode Eliminasi
Metode Substitusi
Metode Campuran
Metode Determinan
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Harga 1 kg apel, 1 kg anggur, dan 4 kg jeruk seluruhnya adalah ….
a. Rp. 37.000,00
b. Rp. 44.000,00
c. Rp. 51.000,00
d. Rp. 55.000,00
e. Rp. 58.000,00
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Harga 2 pensil dan 3 buku adalah Rp.16.000, sedangkan harga 5 pensil dan 2 buku dengan jenis yang sama adalah Rp.18.000,Harga 3 pensil dan 12 buku adalah ….
Rp.48.000,00
Rp.50.000,00
Rp.52.000,00
Rp.54.000,00
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tentukan himpunan penyelesaian dari:
2x + 3y — z = 20
3x + 2y + z = 20
x + 4y + 2z = 15
{(5, 3, -1)}
{(5, -3, -1)}
{(-5, 3, -1)}
{(-5,- 3, -1)}
{(5, 3, 1)}
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