To support a shelf, the diameter of a bolt can measure anywhere from 0.2 cm less than 1.5 cm to 0.2 cm greater than 1.5
cm. Which graph represents the possible measures of the diameter of the bolt?
O
1
++
1.8
1.2
1.4
1.6
2
1.2
1.4
1.6
1.8
2
1
1.2
1.4
1.6
1.8
2
12
1.4
1.6
18

yep

Step-by-step explanation:

i'm not sure i quite understand, could you provide more information?

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.