Find the missing number of the unit rate. 12/3 = ?/1

4

Step-by-step explanation:

12/3 = ?/1 since these are fraction you can write it like this =

The rules of math says that if 2 fraction are equal like these are then the number diagonal of each other multiplied is equal, like 12×1=3×?

so it means = ?  

so  ? is 4

Hope this helps and have a great day!

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

the correct option is b

step-by-step explanation: