
ÔN TẬP HỌC KỲ I PHẦN 1
Authored by Trực tuyến Lớp học
Mathematics
9th Grade
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22 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Bất phương trình nào sau đây là bất phương trình bậc nhất 1 ẩn
2.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
Tìm giá trị m
m = 4
m = –3
m = 1
m = 3
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Tìm điều kiện xác định của phương trình
x ≠ 0, x ≠ -1
x ≠ -1
x = -1, x = 0
x ≠ 0
4.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
Một ngọn tháp cao có bóng in trên mặt đất là dài . Hãy tính góc (làm tròn đến phút) mà tia nắng mặt trời tạo với mặt đất cùng thời điểm đó.
60⁰ 36'
27⁰ 24'
31⁰ 14'
59⁰ 46'
5.
MULTIPLE CHOICE QUESTION
20 sec • 2 pts
Giá trị x = 2 là nghiệm của bất phương trình nào trong các bất phương trình dưới đây?
3x - 4 > 2
x - 3 < 2x + 1
x - 2 ≥ 3x - 4
x² - 5 ≥ x
6.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Tam giác ABC vuông tại A, có AB = 4cm, AC = 3cm. Tính tỉ số lượng giác của góc C ?
sinC = 3/5,
cosC = 4/5,
tanC = 3/4,
cotC = 4/3.
sinC = 4/5,
cosC = 3/5,
tanC = 4/3,
cotC = 3/4.
sinC = 4/5,
cosC = 3/5,
tanC = 4/3,
cotC = 5/3.
sinC = 5/4,
cosC = 4/3,
tanC = 5/3,
cotC = 3/4.
7.
FILL IN THE BLANK QUESTION
1 min • 3 pts
Tính giá trị của biểu thức A, biết : sin212⁰ + sin215⁰ + sin218⁰ +. . . + sin2 78⁰
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