What are the answer choices, if you have any?
Answer:
13
Step-by-step explanation:
x² = 5²+12²
x² = 25+144
x² = 169
x² = 13²
x = 13
Answer:
Option b.
Step-by-step explanation:
we have

Evaluate

therefore
He did not apply the power to the denominator of 3/5