Which function does this graph represent? OA 1x = 3(x + 1)2 + 2
OB. 1x) = -3(x + 1)2 + 2
OC 10 = -3(x + 1)2 - 2
OD. 19 = 3(x - 1)2 + 2

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.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm