[Pre-calc]What is a point on each of the following lines: (a) r = (3,4) + t(2,1)
(b) x = 1 + 2t, y = 3 - 7t
(c) r = (4, 1 + 2T)
(d) x = -5t, y = 6

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.

Identify the number as a rational or irrational.explai. 291.87

The length of a rectangle is 2 inches more than twice it’s width. if the perimeter of the rectangle is 70 inches,find it’s length and width