Toán 9 buổi 3 (Giữa kì 1)
Quiz
•
Mathematics
•
9th Grade
•
Medium
Thân Dư
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18 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Điều kiện để biểu thức có nghĩa là:
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Căn bậc hai số học của 4 là:
A. + 2 B. - 2 C. ± 2 D. 8.
+2
-2
16
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tìm x biết: được kết quả là:
x < 5
x < 3
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Chiều cao của một cây cổ thụ có bóng trên mặt đất dài 4m và có tia sáng từ đỉnh tạo với mặt đất một góc bằng 60 độ là:
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Biểu thức có kết quả là:
-3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tam giác ABC vuông tại A (AB < AC) , BC = 25 cm, đường cao AH = 12 cm. Độ dài HC bằng :
9
5,76
15
16
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cho tam giác DEF vuông tại D , đường cao DH thì DH2 bằng
FH.EF
HE.HF
EH.EF
DF.EF
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