27 ÷ 3 and 3 ÷ 27 associative property
Yes, commutative property
Yes, identity property
No, they are not equal
which one is it

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

yes

yes yes yes

yes

step-by-step explanation: