Which is the equation for a machine’s efficiency? (1 point)
Efficiency = input energy − output energy
Efficiency = ⋅ 100
input energy
output energy
Efficiency = input energy + output energy
Efficiency = . 100
output energy
input energy
Efficiency = input energy − output energy
Efficiency = ⋅ 100
input energy
output energy
Efficiency = input energy + output energy
Efficiency = . 100
output energy
input energy