untitled
Quiz
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
Ana Rahma
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5 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah kios menjual bermacam-macam buah di antaranya jeruk, salak, dan apel. Seseorang yang membeli 1 kg jeruk, 3 kg salak, dan 2 kg apel harus membayar Rp33.000,00. Orang yang membeli 2 kg jeruk, 1 kg salak, dan 1 kg apel harus membayar Rp23.500,00. Orang yang membeli 1 kg jeruk, 2 kg salak, dan 3 kg apel harus membayar Rp36.500,00.
Dari pernyataan diatas maka dapat dibuat model matematikanya . . . . . .
x + 3y + 2z = 33.000
2x + y + z = 23.500
3x + 2y + 3z = 36. 500
x + 3y + 2z = 33.000
2x + y + z = 23.500
x + 2y + 3z = 36. 500
x + 3y + 2z = 33.000
2x + y + z = 36. 500
x + 2y + 3z = 23. 500
x + 3y + 2z = 33.000
2x + y + z = 23.500
2y+ 3x + 3z = 36. 500
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Penyelesaian dari sistem persamaan
x = 5, y = 3, dan z = 1
x = 4, y = –5, dan z = 1
x = –3, y = 4, dan z = 1
x = –5, y = 3, dan z = 2
x = –5, y = 3, dan z = 1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui
2x + y - z = 1 .... (1)
3x + 2y + 2z = 15.... (2)
x - y + z = 4 ....(3)
Jika nilai x dipersamaan (3) disubstitusikan ke persamaan (2) maka persamaan baru nya adalah...
5y - z = 1
5y + z = 3
5y + 5z = 1
5y - z = 3
3y + z = 5
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Harga 2 kg mangga, 2 kg jeruk, dan 1 kg anggur adalah Rp. 76.000, 00. Harga 1 kg mangga, 2 kg jeruk, 2 kg anggur adalah Rp. 98.000, 00. Harga 2 kg mangga, 2 kg jeruk, dan 3 kg anggur adalah Rp. 136.000. Nyatakan ke dalam model matematika.
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
- 4
- 3
- 2
2
4
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