Classify 57°
8.7
6.1
79°
440
7.4
acute scalene
right
isosceles

it is an acute scalene triangle

all angles are below 90° and all 3 lengths are different

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

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars