700, 1200, 1600, 2000, x
If the mean of the five numbers above is 1600, what
is the value of x?

x=2500

*to find the mean of a set of numbers you need to add all the numbers and then divide by how many numbers are in the set*

10 * 563.67 = 5636.7

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