甲乙两车从两地同时相向而行.甲车每小时行a千米,乙车每小时行b千米,经过5小时两车相遇
(1)用式子表示相遇时,甲车比乙车多行了多少千米?
_______________________________________________
(2)用式子表示两地间的路程.
_______________________________________________
(3)当a=80,b=75时,甲车比乙车多行了多少千米?
_______________________________________________
(4)当a=80,b=75时,两地间的路程是多少千米?
_______________________________________________
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