Write the letter of the property illustrated. 1. 14(mn) =(14,)n

2. 19+11=11+19

3. k•1=k

4. (x+y)+z+x+(y+z)

5. x+yz=x+zy

A. communitive property of addition

b. associative property of addition

c. communinitive property of Multiplication

d. assosiative property of multiplication

e. additive identity

f. multipicative identity

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

only 10/60 isn't equivalent

hope this : )

answer: im gonna go with milli

step-by-step explanation: