1 Ma
fa
Shani wraps presents of exactly the same size. She uses
75 cm of ribbon to decorate one present.
Estimate how long 75 cm of ribbon is. 75000 m
b How many metres of ribbon does Shani need to
decorate two presents?
75oom
a
S
How many presents can Shani decorate with 3 m of ribbon?
d How many presents can Shani decorate with 4. m of ribbon?
С​

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.

it goes right

there are no multiple choices