
Kiểm Tra Toán Học
Authored by Thanh Lưu
Mathematics
9th Grade

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20 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Giải hệ phương trình sau: 4 31 3 2 12 x y x y
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Tìm giá trị của a và b để hệ phương trình 5 25 ax by ax y có nghiệm ;1;1x y.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Cho tam giác ABC vuông tại A có AC = 5 cm và 45ABC . Tính BC.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Cho 2 tan 3 . Tính góc (làm tròn đến phút).
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Với giá trị nào của m thì hệ phương trình m 1 x y m x m 1 y 2 có nghiệm duy nhất?
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6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A. 0
B. 1
C. 2
D. vô số
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị cos70 bằng giá trị nào sau đây?
A. sin 70
B. tan 70
C. sin 20
D. cos 20
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