128,000 I believe is the answer
The sum of the measures of the angles in a triangle is 180°.
Therefore we have the equation:
2x° + 3x° + 55° = 180°
5x° + 55° = 180° <em>subtract 55° from both sides</em>
5x° = 125° <em>divdie both sides by 5</em>
x° = 25°
<h3>Answer: x = 25</h3>
The percentage of 4c in the expression 0.2c is 2000%
<h3>How to determine the percentage of 4c?</h3>
The expression is given as:
0.2c
The percentage of 4c is then calculated as:
4c/0.2c
Evaluate the quotient
20
Express as percentage
2000%
Hence, the percentage of 4c in 0.2c is 2000%
Read more about percentages at:
brainly.com/question/843074
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Answer:

Step-by-step explanation:
Suppose the electrician spends t hours at the house working.
Amount charged for every house call by electrician = $50
The electrician earned a total of $400 for a 5 hour job.
Also, C denotes total cost of the electrician's services.
So, the equation for C in terms of t is given below.

Here, 