Salma is walking to school at a constant rate. Midway through the walk, she stops for a few minutes to talk to a friend. She then continues walking to school, but at a slower rate than before.

With number 11 ( show how you got the answer)

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”?

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle