A 5.000-kg stone is perched near the edge of a cliff 25.00 m high. Using the base of the cliff as the reference level, the mechanical energy of the system is J.

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form