17: Please help. How many units is the perimeter of △ABC?

What is the percent of increase for a population that changed from 438,000 to 561,000

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

Which number completes the inequality? 2/3 < _ < 7/9