Answer:
Step-by-step explanation:

The first one seems more reasonable
Answer:
See below for answer.
Step-by-step explanation:
∠ECB ≅ ∠FBC Parallel lines cut by a transversal form congruent alternate
interior angle
Δ AEC ≅ Δ DFB ASA
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Coordinate Planes
<u>Algebra II</u>
Distance Formula: 
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify.</em>
Point (-7, 1)
Point (-7, -5)
<u>Step 2: Find distance </u><u><em>d</em></u>
Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>.
- Substitute in points [Distance Formula]:

- [Order of Operations] Evaluate:

X would be 196. All you have to do is divide 5/7 one each side of the equation and you would get x = 196. I hope this helped and make sure to make this the brainliest answer :)