PLEASE HELP !! Charlie has completed 12 deliveries so far this week. He needs to make 16 deliveries for the week. What percentage of his deliveries has Charlie completed?

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

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