The simplified form of the expression is 
<h3>Simplifying an expression</h3>
From the question, we are to simplify the given expression
The given expression is

The expression can be simplified as shown below





Then,





Hence, the simplified form of the expression is 
Learn more on Simplifying an expression here: brainly.com/question/2320607
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Answer:
A:38 c:54
Step-by-step explanation:
First off, I did the easiest which was a. i found the value of A by subtracting 180 by 142. because a flat line is 180 degrees.
For C, It was more difficult. I subtracted 88 by the value of A, since the value of A is the same as the one next to 88. So I subtracted 126 (88+38) and got 54.
Fortunately, I couldn't figure out B though, but i think it is a similar answer to c.
2.17720 × 10^2 is the answer