Simplify

1/4(1-2/3)^2+1/3

answer as a simplified fraction

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large 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”?