What is an apogee? no answer needed, just take the points.

Pranza plotted point a in the coordinate plane below.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

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”?