Answer:
R=4Ω
Explanation:
R1 and R3 are parrallel
so we have : R=R1*R2/R1+R2
R=6*3/6+3
R=18/9
R=2Ω
R2 and 2Ω are in series,so we have
R=R2+2
R=2+2
R=4Ω
The answer here could be pressure vs. temperature.
Think of PV=nRT. T is related to P the same way as n is (assuming all other variables are kept constant).
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A good diet. and exersise is the answer