Answer:
<em>The voltage at the middle source is</em> 
Step-by-step explanation:
<u>Voltage Sources in Series</u>
When two or more voltage sources are connected in series, the total voltage is the sum of the individual voltages of each source.
The figure shown has three voltage sources of values:



The sum of these voltages is:

Operating:

We know the total voltage is
, thus:

Equating the real parts and the imaginary parts independently:
4+a=6
1+b=-3
Solving each equation:
a = 2
b = -4
The voltage at the middle source is 
The amount for the given data is found as,
.The given expression is true.
<h3>What is the amount?</h3>
The complete repayment of money at the end of the period for which it was borrowed is referred to as the amount.
The given data in the problem is;
P is the annual payment=2827
r is the rate of interest = 3.9%
n is the time period=12
The formula for the amount is found as;

Substitute the given value;

Hence the given expression is true.
To learn more about the amount, refer to the link: brainly.com/question/12184047.
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Before I distribute, I solve the inside first:
2/3[8(3)^2+6]
2/3[8(9)+6]
2/3[72+6]
2/3[78]
2*26= 52 is the answer
another way:
2/3[8(3)^2+6]
2/3[8(9)+6]
2/3[72+6]
(2/3)*72+(2/3)*6
2*24+2*2
48+4= 52