The sum of two number is 47.the greater number is 9 more than the smaller number. which equation can be used to solve for the smaller number? x+(x+9)=47
x-(x+9)=47
x(x+9)=47
x(x-9)=47

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

no one knows lol

step-by-step explanation: