2.5×4+25×0.6
=25x0.4+25x0.6
=25x(0.4+0.6)
=25x1
=25
猜你喜欢
- 1发生在黄河身边的英雄故事
- 2we'll be okay.We will make it through the night.Don't want to wake up in this state
- 3根号下x+3分之负2有意义则x
- 4帮WO用音标拼单词~
- 5I am hungry.I am going to have ( 什么other)cake.
- 6某校中年级与低年级学生人数之和占全校学生的4分之3,中年级与高年级学生人数之和占全校学生总数的5分之3,
- 7F(X)=SIN(2X+α)+COS(2X+α)为偶函数 则最小正周期?速求
- 8秋天的怀念 文中多次提到菊花?后来我为什么去看菊花?
- 9“实验室制取二氧化硫气体”用哪种方式好?
- 10化简【cos(π/4+α)-sin(π/4+α)】/【cos(π/4-α)+sin(π/4-α)】.如题