△AOC~△BOD. Identify the coordinates of D and the scale factor. A.) D (0, −7 1/12); 2/5

B.) D (0, −1 1/5); 5/2

C.) D (0, −7 1/2); 5/2

D.) D (0, −1 1/5); 2/5

C

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.

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !