When completing an online shopping transaction, a typical shopper takes 8 seconds to select each product and another 18 seconds to complete the check-out process. If it takes 42 seconds to complete a transaction, how many products are being purchased?

3 products

Step-by-step explanation:

42-18=24

24/8=3

You're welcome.

3

Step-by-step explanation:48-12=24/8=3

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.

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared