每块地砖面积/m2 | 0.2 | 0.3 | 0.4 | 0.6 | 0.8 | … |
所需地砖的数量/块 | 1200 | 800 | 600 | 400 | 300 | … |
(1)每块地砖的面积和所需地砖的数量有什么关系?
(2)如果每块地砖的面积是0.5m2,铺这一地面需要多少块地砖?
(3)如果铺这一地面用了1000块地砖,所用的地砖每块的面积是多大?
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