Can anyone find the measurements of these angles (#7 only u)

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*