Dave uses the associative property of multiplication to write an expression that is equivalent to 8 x (6 x b) what expression did he write

(8 x 6) x b

Step-by-step explanation:

The associate property states yuo can re-associate multiplication and group under the same operation differently. This means Dave wrote (8 x 6) x b.

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

vbbv

step-by-step explanation: