In quadrilateral abcd, diagonals ac and bd bisect one another: what statement is used to prove that quadrilateral abcd is a parallelogram? angles abc and bcd are congruent. sides ab and bc are congruent. triangles bpa and dpc are congruent. triangles bcp and cdp are congruent.

Which is an equation for the nth terms of the sequence 12,15,18,21

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.