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The justification of the third step in her proof of the property of logarithms is;
; Power rule of exponents
<h3>What are properties of Logarithms?</h3>
From the full question, the second step stopped at;
![log_{b} (b^{x} . b^{y} )](https://tex.z-dn.net/?f=log_%7Bb%7D%20%28b%5E%7Bx%7D%20.%20b%5E%7By%7D%20%29)
Now, according to Power Rule for Exponents we know that (a^m)ⁿ = a^(m*n). That means that to raise a number with an exponent to a power, we will multiply the exponent times the power.
Thus,
will give us
using power rule of exponents
Read more about Properties of Logarithms at; brainly.com/question/14765705
For a parallelogram with 2 sides at right angles to the other two sides, then with WS =10 and then SZ would equal WS length so SZ = 10 also but SZ=2x-6 so 2x-6=10 and solving for x = 8. That is the answer either if the sides are perpendicular or if WS and SZ are part of the same diagonal.