张全每周计划跑5.6千米,他每天要跑多少千米?
有下列四个命题:①相等的角是对顶角;②两条直线被第三条直线所截,同位角相等;③对顶角相等.其中是假命题的个数有 ( )
用你喜欢的方法计算.
8.8+8.8×99=____
—Hey, turn it off, please! We don't music in the reading room. ——Oh, I'm sorry, sir. I won't do it again.