A man travelled a distance of 240km, starting from 8:00am and ending at 11:00am without stopping an the way . what was his average speed?

80km/h

Step-by-step explanation:

Average speed = distance/time

Given

Distance = 240km

The man travelled from 8am to 11am without stopping on the way.

8am to 11am is 3 hours , therefore time Is 3 hrs.

Average speed = 240km/3hrs

= 80km/h

57 732

step-by-step explanation:

i dont really.know

27/4x^6 y^8

step-by-step explanation:

4(3x^2y^4)^3 (2x^3y^5)^4

=

108x^6 y^12 /16x^12 y^20

=

108 /16x^6 y^8

=

27 /4x^6 y^8