What kind of property is this (4*2)*8 = 4 *(2*8)

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

You are making a blueprint of your bedroom and you plan to use a scale factor of 18 . the actual width of your room is 14 feet and the actual length of your room is 16 feet. determine the width and length of your room on the blueprint. on the blueprint, your room will have a width of feet and a length of feet.

Somone me i want to know what 18 hours out of 24 hours in a fraction