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Mathematics, 05.11.2020 23:30 robertschulte116

Lightbulbs act as resistors. Janine is building a circuit that contains two lightbulbs in parallel. One of the lightbulbs has a resistance of 120 ohms, but the resistance of the second lightbulb is unknown. She models the total resistance in the circuit, t, with this equation, in which r represents the resistance of the second lightbulb. t = 120r/r+120

Find the inverse of Janine’s equation.

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