Sistem Persamaan Linear Dalam Tiga Pemboleh Ubah
Quiz
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Selesaikan persamaan linear serentak berikut dengan menggunakan kaedah penggantian.
x + y - 3z = 4
x - 3y - z = 12
-3x + y + z = 8
x = -17, y = -13, z = -14
x = -17/2 , y = -13/2 , z = -14/2
x = 17, y = 13, z = 14
x = -17/3 , y = -13/3 , z = -14/3
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tiga jenis bahan kimia, x, y, dan z, diperbuat daripada tiga jenis bahan mentah, A, B dan C. Jadual menunjukkan nisbah penggunaan A, B dan C untuk x, y, dan z. Diberi bekalan A, B dan C masing-masing ialah 30kg, 40kg dan 35kg. Cari jisim-jisim x, y, dan z yang dihasilkan dengan menganggap bahawa semua bahan mentah telah digunakan.
x= 20, y = 5, z = 80
x= -20, y = -5, z = 80
x= 80, y = 5, z = -20
x= 5, y = -20, z = -80
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Seutas dawai dengan panjang 80cm dibengkokkan untuk membentuk pentagon seperti yang ditunjukkan dalam rajah dibawah. Diberi luas pentagon yang terbentuk itu ialah 384cm². Cari niali-nilai yang mungkin bagi x dan y.
x=-2 , y =-8 ; x = 4/3 , y = 56/3
x=2 , y =8 ; x = 4/3 , y = 56/3
x=-2/3 , y =-8/3 ; x = 4 , y = 56
x= 2 , y = 8 ; x = -4 , y = -56
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Selesaikan sistem persamaan linear berikut.
1/2x + 1/3y =32
1/4y +1/2z = 24
1/6x + 1/3z = 20
x = 24 , y = 36 , z = 48
x = 48 , y = 24 , z = 36
x = 24 , y = 12 , z = 18
x = 8, y = 12 , z = 16
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Selesaikan sistem persamaan linear berikut.
2x + 3y + z = x + y + 2z = 3x + 6y - 2z = 1
x = -1, y= 2, z = 3
x = 3, y= -2, z = -1
x = -3, y= 2, z = 1
x = 1, y= -2, z = 3
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Selesaikan persamaan serentak berikut.
x - 5y = 10
xy = 15
x = 15, y = 1 ; x = -5, y = -3
x = -15, y = 1 ; x = 5, y = 3
x = 1, y = 15 ; x = -3, y = -5
x = -1, y = -15 ; x = -3, y = -5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Selesaikan sistem persamaan linear berikut.
2p + 3q - r = 2
p - 2q + 2r = 5
4p + q + 3r = 4
p = -5, q = 4, r = -4
p = 5, q = -4, r = -4
p = 10, q = -8, r = -4
p = 5, q = -8 r = 8
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