
BTVN ngày 20/2/24
Authored by Phương Hoàng
Mathematics
7th Grade
Used 1+ times

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10 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Tìm x, biết:
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Tìm x, biết x<0 và thỏa mãn tỉ lệ thức:
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tìm x,y biết:
(x;y) = (3/2;5/2), (-3/2;-5/2)
(x;y) = (2;10/3), (-2;-10/3)
(x;y) = (6;10), (-6;-10)
(x;y) = (3;5), (-3;-5)
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Tìm x,y,z biết:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính chiều dài của một hình chữ nhật, biết chu vi hình chữ nhật là 140m và 2 cạnh tỉ lệ với 3 và 4.
40m
30m
60m
80m
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Để pha nước muối sinh lí, người ta cần pha theo đúng tỉ lệ. Biết rằng cứ 1000ml nước tinh khiết thì pha với 9 g muối. Hỏi nếu có 45 g muối thì cần pha với bao nhiêu lít nước tinh khiết để được nước muối sinh lí?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Biết x và y là hai đại lượng tỉ lệ thuận và khi x=2 thì y=-4. Hệ số tỉ lệ k của y đối với x là:
k = -2
k = -1/2
k = 1/2
k = 2
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