Sistem Persamaan Linear Dalam Tiga Pemboleh Ubah

Sistem Persamaan Linear Dalam Tiga Pemboleh Ubah

10th Grade

10 Qs

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Sistem Persamaan Linear Dalam Tiga Pemboleh Ubah

Sistem Persamaan Linear Dalam Tiga Pemboleh Ubah

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Tchr SUBOH

Used 46+ times

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10 questions

Show all answers

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

Media Image

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

Media Image

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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