solve for the value of x. Do the expressions 1/2x+3 and 3/2x-1 have the same value. show or explain for full credit.​

Step-by-step explanation:

I am assuming that the equations are typed correctly meaning

x/2+3=3x/2-1

x/2-3x/2=-1-3

-2x/2=-4

-2x=-8

x=4

So the expressions are equal only when x=4

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