Using the triangle above, if ab = 4x + 5,
and ac = 9x - 20, and bc = x + 17, solve
for both x and the perimeter of the
triangle. show all work.

Taking algebra two apex courses and need with these questions

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

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.