A.亮亮和芳芳从一条道路的两端同时出发,相向而行,经过5分钟相遇。亮亮每分钟走50米,芳芳每分钟走60米,这条道路长多少米? |
B.王强和李明在一条环形跑道上从同一地点同时出发,反向而行,王强每分钟走50米,李明每分钟走60米,经过5分钟两人第一次相遇。这条环形跑道长多少米? |
C.小刚和小丽同时出发从甲地到乙地。小刚每分钟走60米,小丽每分钟走50米。经过5分钟小刚到达乙地,这时小丽离乙地还有多远? |
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