①一台空调打七五折后售价是3150元,买这样一台空调比原来便宜多少钱?
②某服装厂第一车间计划25天生产1275套衣服,前5天生产了195套,要在计划天数内完成任务,以后平均每天要生产多少套?
③教育储蓄所得的利息不需纳税,妈妈为李军存了2万元三年期教育储蓄,年利率是5.22%到期后,可以从银行取得本金和利息一共多少元?
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