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Mathematics, 29.12.2021 04:00 michellemunoz250

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 =

120

T + 120

Find the inverse of Janine's equation.

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Answers: 3

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