Bro I need help explain what is meant by "it's okay for a student to not succeed right away" ima just put it as math:-P

Learning is a process that often involves unsuccessful attempts.

This is not failure since options are eliminated toward the correct solution.

Learning and problem solving require passing through a period of sorting through facts and options toward success.

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.