Answer:
The correct answer is Option A: Multiplication Property of Equality
Step-by-step explanation:
Given equation is:

The given equation is a linear equation in one variable. Different equality properties are used to solve equations like these.
First of all the denominator with 1/5x has to be eliminated for which the whole equation will be multiplied by 5

This property is called multiplication property of equality.
Hence,
The correct answer is Option A: Multiplication Property of Equality
For this you need the pythagorean theorem.
5 squared is: 25
25+25= 50
then u need the square root of 50 which is approximately= 7.07107 cm
The length of the diagonal AB is 7.07107 cm
K-10=-7
K=10-7 Add 7 for both side.
k=3
Angle 4 equals angle 5, when all angles are equal and the triangles are similar