Is 110 m high, what is the potential
A roller coaster train with a mass of 500 kg stops at the top of a hill
energy of the train?
4,900 J
5,6123 j
55,000 j
539,000 j

Simonne used the following steps to simplify the given expression. 12-3(-2x+4) step 1: 12+(-)+(-3)(4) step 2: 12+6x+(-12) step 3: 12+(-12)+6x step 4: 0+6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? •identity property of addition •inverse property of addition •associative property of addition •commutative property of addition