一 does it take you to go to work from here by walk?
一 About walk.
A:How long; thirty minute's
B:How long; thirty minutes'
C:How far; thirty minute's
直接写得数。
20.4-0.7=
0.1+0.01=
70.7÷35=
1.6×(1.6-1.6)=
0.25×2.3×4=
13 - 14 =
12×4÷12×4=
44÷ 1130 =
分解因式a2﹣9的结果是____ .
若关于x的函数y=(n+1)xm-1是一次函数,则m=____ n=____.