Another written expression is 5x+25
Step-by-step explanation:
Complete the proof of the Pythagorean theorem is given below.
Statement Reason
1. ΔABC is a right triangle, with a 1. Given
right angle at ∠C
2. Draw an altitude from point C 2. From a point not on a line, exactly
to AB one perpendicular can be drawn through the point to the line
3. ∠CDB and ∠CDA are right 3. Definition of altitude
angles
4. ∠BCA ≅ ∠BDC 4. All right angles are congruent
5. ∠B ≅ ∠B 5. 
6. ΔCBA ~ ΔDBC 6. AA Similarity Postulate
7.
7. 
8.
8. 
9. ∠CDA ≅ ∠BCA 9. 
10. ∠A ≅ ∠A 10. 
11. ΔCBA ~ ΔDBA 11. AA Similarity Postulate
12.
12. 
13.
13. 
14.
14. 
15.
15. Distributive Property
16.
16.
17.
18. 
Step-by-step explanation:
make equation and find the value
Step-by-step explanation:

If it helps, write as a product of fractions, grouped by variable.

Now reduce using exponent rules.

Answer:
10 m
Step-by-step explanation:
A square has all equal side lengths. If that is the case, the we have 4 sides that equal each other:
x + x + x + x = 40 m
4x = 40m
x = 10m
So each side is 10 m long.