2. 4.2 - 16 4
1.
2.
3.
4.
order of operations

16

Step-by-step explanation: 0 < 1/1< 2/1= 2/1< 3/1< 4 = 4 < 21/5 < 16

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

its 8

step-by-step explanation: