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If the impedance of a resistor in a circuit is Z_(1)=2+9i ohms and the impedance of a second resistor is Z_(2)=7-i ohms, find the total

If the impedance of a resistor in a circuit is Z_(1)=2+9i ohms and the impedance of a second resistor is Z_(2)=7-i ohms, find the total impedance of the two resistors when they are placed in series (the sum of the two impedances ).

An antique wooden chest has the shape of a rectangular prism. It has a width of 16 inches. Its length is 4 times its height. The volume of the chest is 4,096 cubic inches. What is the height of the chest?


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