Prove that the medians to the legs of an isosceles triangle are congruent What rule did you use to prove triangles congruent?

AAA
ASA, SAA
Cannot be determined
SAS
SSS

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?