the correct answer is B &/or D, hope this helped (:
Hello!
<h3><em><u>Answers</u></em></h3>
1.
Simplest form: 
2.
Simplest form: 
3.
Simplest form: 
4.
Simplest form: 
5.
Simplest form: 
6.
Simplest form: 
<h3><em><u>Explanation:</u></em></h3>
Simply add the numerators of the like fractions together. The denominators remain the same.
Answer:
It B. X=12
Step-by-step explanation:
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Get total lengths by multiplying:
10 x 12.6 = 126
6 x 16.1 = 96.6
Add the total lengths together and divide by 16:
126 + 96.6 = 222.6
222.6 / 16 = 13.9125
Rounded to 2 decimal places = 13.91
answer: 13.91