88 | 87 | 94 | 56 | 100 | 75 | 69 | 83 | 75 | 57 | 80 | 93 | 74 | 76 | 99 |
77 | 98 | 97 | 85 | 91 | 64 | 95 | 90 | 81 | 83 | 65 | 76 | 88 | 100 | 88 |
99 | 74 | 78 | 95 | 73 | 85 | 93 | 100 | 77 | 95 | 82 | 89 | 95 | 95 | 92 |
1.按分数段填写下表.
分数段/分 | 100 | 90~99 | 80~89 | 70~79 | 60~69 | 60以下 | 合计 |
人数 |
2.这个班的学生在
3.这次期中检测的及格率大约是

同类型试题

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2


y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

