4. the extreme cycle competition requires
cyclists to ride from fort worth, texas to
fresno, california. the distance from fort
worth to fresno is 1,530 miles. if a cyclist
maintains an average speed of 17 miles per
hour, how many hours will it take the
cyclist to travel from fort worth to
fresno?

true? is that what you're asking or do you mean something else?

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:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3