The domain of a vector function r(t) consists of all values of t for which the expression for r(t) is defined. therefore, to find the domain, find the intervals where each component is defined, then find their intersection. the first component of r(t) = 25 − t2 , e−6t, ln(t + 4) , namely 25 − t2 , is defined as long as 25 − t2 ≥ 0. this means t must be in the interval

step-by-step explanation:

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.

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.