Which equation represents a line which is perpendicular to the line y=5/4x -2?

What’s the ratio in simplest form if you count 14 robins out of 150 birds

Which statement best explains why ben uses the width hi to create the arc at j from point k

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”?