PLEASE HELP ? PLEASE HELP ?

Speed of pulley A=600 r. p.m.

Speed of pulleys B and C = A : 300 B:1200 C:600

Speed of pulley D = A:6 B:60 C:600

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

-9

step-by-step explanation:

cant see photo

step-by-step explanation:

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)