Find the length of side x in simplest radical form with a rational denominator 45°
3
X
45°

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

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”?