Ihave a few questions: 1. jean runs 3.5 miles per week while janell runs 13.3 miles per week. janell runs how many times the number of miles that jean runs? 2. cora is saving for college. the first year of tuition is $7,485.00. she has a year to save this amount of money. how much should she save per month so she can meet her goal?

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:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.