Answer:
r is -7
Step-by-step explanation:
(I believe that you mistyped and meant that the fourth term in the sequence should be -686)
The easiest way to find the common ratio is to divide the numbers that are adjacent to each other
As you can see, when we divide a term by its previous term, we get -7 every time. This is our common ratio.
Your answer would be 36.8. All you need to do is add up all of the sides with a calculator.
The length of the cable will be 6 feet which can be installed 120-volt/15-amp circuit.
<h3>What is an ampere circuit?</h3>
Ampere's circuital law states that “the line integral of the magnetic field surrounding closed-loop equals to the number of times the algebraic sum of currents passing through the loop.”
Here we have a cable rating of 120-volt/15-amp so if the 1-ampere circuit means 1 watt per foot cable will be used for the 1-ampere circuit.
A Total of the 15-ampere circuit means 15 watts needed so we are using 2.5 watts per foot.
Hence the length of the cable will be 6 feet which can be installed 120-volt/15-amp circuit.
To know more about the ampere circuit follow
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(1/4)*(8/1)
(1*8)/(4*1)8/42 miles